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52020570 = 2357247717
BaseRepresentation
bin1100011001110…
…0010101011010
310121212220210210
43012130111122
5101304124240
65054551550
71201111320
oct306342532
9117786723
1052020570
1127400908
12155085b6
13aa15004
146ca1d10
154878780
hex319c55a

52020570 has 32 divisors (see below), whose sum is σ = 142685568. Its totient is φ = 11890368.

The previous prime is 52020547. The next prime is 52020571. The reversal of 52020570 is 7502025.

52020570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×520205702 = 5412279406249800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (52020571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123649 + ... + 124068.

It is an arithmetic number, because the mean of its divisors is an integer number (4458924).

Almost surely, 252020570 is an apocalyptic number.

52020570 is an abundant number, since it is smaller than the sum of its proper divisors (90664998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52020570 is a wasteful number, since it uses less digits than its factorization.

52020570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247734.

The product of its (nonzero) digits is 700, while the sum is 21.

The square root of 52020570 is about 7212.5286827853. The cubic root of 52020570 is about 373.3003257028.

Adding to 52020570 its reverse (7502025), we get a palindrome (59522595).

The spelling of 52020570 in words is "fifty-two million, twenty thousand, five hundred seventy".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 247717 495434 743151 1238585 1486302 1734019 2477170 3468038 3715755 5202057 7431510 8670095 10404114 17340190 26010285 52020570