52653691 has 4 divisors (see below), whose sum is σ = 52791552. Its totient is φ = 52515832.

The previous prime is 52653683. The next prime is 52653697. The reversal of 52653691 is 19635625.

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

It is a cyclic number.

It is not a de Polignac number, because 52653691 - 2³ = 52653683 is a prime.

It is a super-2 number, since 2×52653691² = 5544822351846962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52653691.

It is not an unprimeable number, because it can be changed into a prime (52653697) 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, 68356 + ... + 69121.

It is an arithmetic number, because the mean of its divisors is an integer number (13197888).

Almost surely, 2^52653691 is an apocalyptic number.

52653691 is a deficient number, since it is larger than the sum of its proper divisors (137861).

52653691 is a wasteful number, since it uses less digits than its factorization.

52653691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137860.

The product of its digits is 48600, while the sum is 37.

The square root of 52653691 is about 7256.2863091254. The cubic root of 52653691 is about 374.8086514156.

The spelling of 52653691 in words is "fifty-two million, six hundred fifty-three thousand, six hundred ninety-one".