53602661 has 4 divisors (see below), whose sum is σ = 61260192. Its totient is φ = 45945132.

The previous prime is 53602631. The next prime is 53602669. The reversal of 53602661 is 16620635.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16620635 = 5 ⋅3324127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53602661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53602669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3828755 + ... + 3828768.

It is an arithmetic number, because the mean of its divisors is an integer number (15315048).

Almost surely, 2^53602661 is an apocalyptic number.

It is an amenable number.

53602661 is a deficient number, since it is larger than the sum of its proper divisors (7657531).

53602661 is an equidigital number, since it uses as much as digits as its factorization.

53602661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657530.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 53602661 is about 7321.3838172848. The cubic root of 53602661 is about 377.0469655622.

The spelling of 53602661 in words is "fifty-three million, six hundred two thousand, six hundred sixty-one".