53831861 has 2 divisors, whose sum is σ = 53831862. Its totient is φ = 53831860.

The previous prime is 53831857. The next prime is 53831881. The reversal of 53831861 is 16813835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52635025 + 1196836 = 7255^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 53831861 - 2² = 53831857 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53831851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26915930 + 26915931.

It is an arithmetic number, because the mean of its divisors is an integer number (26915931).

Almost surely, 2^53831861 is an apocalyptic number.

It is an amenable number.

53831861 is a deficient number, since it is larger than the sum of its proper divisors (1).

53831861 is an equidigital number, since it uses as much as digits as its factorization.

53831861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 53831861 is about 7337.0198991144. The cubic root of 53831861 is about 377.5836073459.

The spelling of 53831861 in words is "fifty-three million, eight hundred thirty-one thousand, eight hundred sixty-one".