53690957 has 4 divisors (see below), whose sum is σ = 54337920. Its totient is φ = 53043996.

The previous prime is 53690953. The next prime is 53690983. The reversal of 53690957 is 75909635.

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: 75909635 = 5 ⋅15181927.

It is a cyclic number.

It is not a de Polignac number, because 53690957 - 2² = 53690953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53690953) 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, 323357 + ... + 323522.

It is an arithmetic number, because the mean of its divisors is an integer number (13584480).

Almost surely, 2^53690957 is an apocalyptic number.

It is an amenable number.

53690957 is a deficient number, since it is larger than the sum of its proper divisors (646963).

53690957 is an equidigital number, since it uses as much as digits as its factorization.

53690957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646962.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 53690957 is about 7327.4113437148. The cubic root of 53690957 is about 377.2538798909.

The spelling of 53690957 in words is "fifty-three million, six hundred ninety thousand, nine hundred fifty-seven".