52307661 has 16 divisors (see below), whose sum is σ = 81212544. Its totient is φ = 29325504.

The previous prime is 52307653. The next prime is 52307669. The reversal of 52307661 is 16670325.

It is an interprime number because it is at equal distance from previous prime (52307653) and next prime (52307669).

It is not a de Polignac number, because 52307661 - 2³ = 52307653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52307669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22386 + ... + 24611.

It is an arithmetic number, because the mean of its divisors is an integer number (5075784).

Almost surely, 2^52307661 is an apocalyptic number.

It is an amenable number.

52307661 is a deficient number, since it is larger than the sum of its proper divisors (28904883).

52307661 is a wasteful number, since it uses less digits than its factorization.

52307661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47060.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 52307661 is about 7232.4035423917. The cubic root of 52307661 is about 373.9857892548.

Adding to 52307661 its reverse (16670325), we get a palindrome (68977986).

The spelling of 52307661 in words is "fifty-two million, three hundred seven thousand, six hundred sixty-one".