53631251 has 2 divisors, whose sum is σ = 53631252. Its totient is φ = 53631250.

The previous prime is 53631229. The next prime is 53631257. The reversal of 53631251 is 15213635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53631251 - 2⁶ = 53631187 is a prime.

It is a super-2 number, since 2×53631251² = 5752622167650002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53631251.

It is not a weakly prime, because it can be changed into another prime (53631257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26815625 + 26815626.

It is an arithmetic number, because the mean of its divisors is an integer number (26815626).

Almost surely, 2^53631251 is an apocalyptic number.

53631251 is a deficient number, since it is larger than the sum of its proper divisors (1).

53631251 is an equidigital number, since it uses as much as digits as its factorization.

53631251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 26.

The square root of 53631251 is about 7323.3360567435. The cubic root of 53631251 is about 377.1139887073.

Adding to 53631251 its reverse (15213635), we get a palindrome (68844886).

The spelling of 53631251 in words is "fifty-three million, six hundred thirty-one thousand, two hundred fifty-one".