53553931 has 2 divisors, whose sum is σ = 53553932. Its totient is φ = 53553930.

The previous prime is 53553869. The next prime is 53553943. The reversal of 53553931 is 13935535.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53553931 - 2⁷ = 53553803 is a prime.

It is a super-2 number, since 2×53553931² = 5736047051105522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53551931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26776965 + 26776966.

It is an arithmetic number, because the mean of its divisors is an integer number (26776966).

Almost surely, 2^53553931 is an apocalyptic number.

53553931 is a deficient number, since it is larger than the sum of its proper divisors (1).

53553931 is an equidigital number, since it uses as much as digits as its factorization.

53553931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30375, while the sum is 34.

The square root of 53553931 is about 7318.0551378081. The cubic root of 53553931 is about 376.9326735422.

The spelling of 53553931 in words is "fifty-three million, five hundred fifty-three thousand, nine hundred thirty-one".