53656531 has 2 divisors, whose sum is σ = 53656532. Its totient is φ = 53656530.

The previous prime is 53656523. The next prime is 53656543. The reversal of 53656531 is 13565635.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53656531 - 2³ = 53656523 is a prime.

It is a super-2 number, since 2×53656531² = 5758046637907922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53656831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26828265 + 26828266.

It is an arithmetic number, because the mean of its divisors is an integer number (26828266).

Almost surely, 2^53656531 is an apocalyptic number.

53656531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53656531 is an equidigital number, since it uses as much as digits as its factorization.

53656531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 34.

The square root of 53656531 is about 7325.0618427424. The cubic root of 53656531 is about 377.1732324252.

The spelling of 53656531 in words is "fifty-three million, six hundred fifty-six thousand, five hundred thirty-one".