52736661 has 6 divisors (see below), whose sum is σ = 76175190. Its totient is φ = 35157768.

The previous prime is 52736659. The next prime is 52736711. The reversal of 52736661 is 16663725.

It can be written as a sum of positive squares in only one way, i.e., 52272900 + 463761 = 7230^2 + 681^2 .

It is not a de Polignac number, because 52736661 - 2¹ = 52736659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52736561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2929806 + ... + 2929823.

It is an arithmetic number, because the mean of its divisors is an integer number (12695865).

Almost surely, 2^52736661 is an apocalyptic number.

It is an amenable number.

52736661 is a deficient number, since it is larger than the sum of its proper divisors (23438529).

52736661 is a wasteful number, since it uses less digits than its factorization.

52736661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5859635 (or 5859632 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 52736661 is about 7262.0011704764. The cubic root of 52736661 is about 375.0054185884.

The spelling of 52736661 in words is "fifty-two million, seven hundred thirty-six thousand, six hundred sixty-one".