53157431 has 2 divisors, whose sum is σ = 53157432. Its totient is φ = 53157430.

The previous prime is 53157427. The next prime is 53157437. The reversal of 53157431 is 13475135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53157431 - 2² = 53157427 is a prime.

It is a super-2 number, since 2×53157431² = 5651424941039522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53157394 and 53157403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53157437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26578715 + 26578716.

It is an arithmetic number, because the mean of its divisors is an integer number (26578716).

Almost surely, 2^53157431 is an apocalyptic number.

53157431 is a deficient number, since it is larger than the sum of its proper divisors (1).

53157431 is an equidigital number, since it uses as much as digits as its factorization.

53157431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 29.

The square root of 53157431 is about 7290.9142773729. The cubic root of 53157431 is about 376.0001296778. Note that the first 3 decimals are identical.

The spelling of 53157431 in words is "fifty-three million, one hundred fifty-seven thousand, four hundred thirty-one".