45388631 has 2 divisors, whose sum is σ = 45388632. Its totient is φ = 45388630.

The previous prime is 45388627. The next prime is 45388669. The reversal of 45388631 is 13688354.

It is an a-pointer prime, because the next prime (45388669) can be obtained adding 45388631 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45388631 - 2² = 45388627 is a prime.

It is a super-2 number, since 2×45388631² = 4120255648108322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45388621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22694315 + 22694316.

It is an arithmetic number, because the mean of its divisors is an integer number (22694316).

Almost surely, 2^45388631 is an apocalyptic number.

45388631 is a deficient number, since it is larger than the sum of its proper divisors (1).

45388631 is an equidigital number, since it uses as much as digits as its factorization.

45388631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 45388631 is about 6737.1085043956. The cubic root of 45388631 is about 356.7103368467.

The spelling of 45388631 in words is "forty-five million, three hundred eighty-eight thousand, six hundred thirty-one".