53988631 has 2 divisors, whose sum is σ = 53988632. Its totient is φ = 53988630.

The previous prime is 53988611. The next prime is 53988673. The reversal of 53988631 is 13688935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53988631 - 2⁹ = 53988119 is a prime.

It is a super-2 number, since 2×53988631² = 5829544554508322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53988611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26994315 + 26994316.

It is an arithmetic number, because the mean of its divisors is an integer number (26994316).

Almost surely, 2^53988631 is an apocalyptic number.

53988631 is a deficient number, since it is larger than the sum of its proper divisors (1).

53988631 is an equidigital number, since it uses as much as digits as its factorization.

53988631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 53988631 is about 7347.6956251603. The cubic root of 53988631 is about 377.9497871022.

The spelling of 53988631 in words is "fifty-three million, nine hundred eighty-eight thousand, six hundred thirty-one".