45638731 has 2 divisors, whose sum is σ = 45638732. Its totient is φ = 45638730.

The previous prime is 45638713. The next prime is 45638753. The reversal of 45638731 is 13783654.

Together with previous prime (45638713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45638731 - 2¹¹ = 45636683 is a prime.

It is a super-2 number, since 2×45638731² = 4165787534580722, which contains 22 as substring.

It is equal to p_2754586 and since 45638731 and 2754586 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (45638701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22819365 + 22819366.

It is an arithmetic number, because the mean of its divisors is an integer number (22819366).

Almost surely, 2^45638731 is an apocalyptic number.

45638731 is a deficient number, since it is larger than the sum of its proper divisors (1).

45638731 is an equidigital number, since it uses as much as digits as its factorization.

45638731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 45638731 is about 6755.6443808122. The cubic root of 45638731 is about 357.3643177547.

The spelling of 45638731 in words is "forty-five million, six hundred thirty-eight thousand, seven hundred thirty-one".