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52545069 = 3237157793
BaseRepresentation
bin1100100001110…
…0011000101101
310122212120021200
43020130120231
5101422420234
65114120113
71205424423
oct310343055
9118776250
1052545069
1127729985
1215720039
13ab69975
146d9b113
15492dd99
hex321c62d

52545069 has 12 divisors (see below), whose sum is σ = 77950236. Its totient is φ = 34083072.

The previous prime is 52545061. The next prime is 52545083. The reversal of 52545069 is 96054525.

52545069 is a `hidden beast` number, since 52 + 545 + 0 + 69 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37822500 + 14722569 = 6150^2 + 3837^2 .

It is not a de Polignac number, because 52545069 - 23 = 52545061 is a prime.

It is a super-2 number, since 2×525450692 = 5521968552429522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52545061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78564 + ... + 79229.

It is an arithmetic number, because the mean of its divisors is an integer number (6495853).

Almost surely, 252545069 is an apocalyptic number.

It is an amenable number.

52545069 is a deficient number, since it is larger than the sum of its proper divisors (25405167).

52545069 is a wasteful number, since it uses less digits than its factorization.

52545069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157836 (or 157833 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 52545069 is about 7248.7977623879. The cubic root of 52545069 is about 374.5507366481.

The spelling of 52545069 in words is "fifty-two million, five hundred forty-five thousand, sixty-nine".

Divisors: 1 3 9 37 111 333 157793 473379 1420137 5838341 17515023 52545069