53457631 has 2 divisors, whose sum is σ = 53457632. Its totient is φ = 53457630.

The previous prime is 53457629. The next prime is 53457647. The reversal of 53457631 is 13675435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53457631 - 2¹ = 53457629 is a prime.

It is a super-2 number, since 2×53457631² = 5715436624264322, which contains 22 as substring.

Together with 53457629, it forms a pair of twin primes.

It is equal to p_3195781 and since 53457631 and 3195781 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53457601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26728815 + 26728816.

It is an arithmetic number, because the mean of its divisors is an integer number (26728816).

Almost surely, 2^53457631 is an apocalyptic number.

53457631 is a deficient number, since it is larger than the sum of its proper divisors (1).

53457631 is an equidigital number, since it uses as much as digits as its factorization.

53457631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 34.

The square root of 53457631 is about 7311.4725602986. The cubic root of 53457631 is about 376.7066061320.

The spelling of 53457631 in words is "fifty-three million, four hundred fifty-seven thousand, six hundred thirty-one".