53856931 has 2 divisors, whose sum is σ = 53856932. Its totient is φ = 53856930.

The previous prime is 53856923. The next prime is 53856947. The reversal of 53856931 is 13965835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53856931 - 2³ = 53856923 is a prime.

It is a super-2 number, since 2×53856931² = 5801138033477522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53850931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26928465 + 26928466.

It is an arithmetic number, because the mean of its divisors is an integer number (26928466).

Almost surely, 2^53856931 is an apocalyptic number.

53856931 is a deficient number, since it is larger than the sum of its proper divisors (1).

53856931 is an equidigital number, since it uses as much as digits as its factorization.

53856931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 53856931 is about 7338.7281595655. The cubic root of 53856931 is about 377.6422129856.

The spelling of 53856931 in words is "fifty-three million, eight hundred fifty-six thousand, nine hundred thirty-one".