52751645 has 4 divisors (see below), whose sum is σ = 63301980. Its totient is φ = 42201312.

The previous prime is 52751639. The next prime is 52751683. The reversal of 52751645 is 54615725.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 32058244 = 4549^2 + 5662^2 .

It is a cyclic number.

It is not a de Polignac number, because 52751645 - 2⁸ = 52751389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5275160 + ... + 5275169.

It is an arithmetic number, because the mean of its divisors is an integer number (15825495).

Almost surely, 2^52751645 is an apocalyptic number.

It is an amenable number.

52751645 is a deficient number, since it is larger than the sum of its proper divisors (10550335).

52751645 is a wasteful number, since it uses less digits than its factorization.

52751645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10550334.

The product of its digits is 42000, while the sum is 35.

The square root of 52751645 is about 7263.0327687544. The cubic root of 52751645 is about 375.0409318284.

The spelling of 52751645 in words is "fifty-two million, seven hundred fifty-one thousand, six hundred forty-five".