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52901989 = 77557427
BaseRepresentation
bin1100100111001…
…1100001100101
310200112200212221
43021303201211
5102020330424
65125512341
71211442130
oct311634145
9120480787
1052901989
1127953058
12158726b1
13ac6326a
147051217
15499e9e4
hex3273865

52901989 has 4 divisors (see below), whose sum is σ = 60459424. Its totient is φ = 45344556.

The previous prime is 52901941. The next prime is 52901993. The reversal of 52901989 is 98910925.

52901989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52901989 - 211 = 52899941 is a prime.

It is a super-2 number, since 2×529019892 = 5597240880312242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52901929) 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 3 ways as a sum of consecutive naturals, for example, 3778707 + ... + 3778720.

It is an arithmetic number, because the mean of its divisors is an integer number (15114856).

Almost surely, 252901989 is an apocalyptic number.

It is an amenable number.

52901989 is a deficient number, since it is larger than the sum of its proper divisors (7557435).

52901989 is an equidigital number, since it uses as much as digits as its factorization.

52901989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557434.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 52901989 is about 7273.3753512382. The cubic root of 52901989 is about 375.3968870595.

The spelling of 52901989 in words is "fifty-two million, nine hundred one thousand, nine hundred eighty-nine".

Divisors: 1 7 7557427 52901989