45647731 has 2 divisors, whose sum is σ = 45647732. Its totient is φ = 45647730.

The previous prime is 45647713. The next prime is 45647741. The reversal of 45647731 is 13774654.

Together with previous prime (45647713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45647731 - 2⁵ = 45647699 is a prime.

It is a super-2 number, since 2×45647731² = 4167430690896722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45647741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22823865 + 22823866.

It is an arithmetic number, because the mean of its divisors is an integer number (22823866).

Almost surely, 2^45647731 is an apocalyptic number.

45647731 is a deficient number, since it is larger than the sum of its proper divisors (1).

45647731 is an equidigital number, since it uses as much as digits as its factorization.

45647731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 45647731 is about 6756.3104576388. The cubic root of 45647731 is about 357.3878070689.

The spelling of 45647731 in words is "forty-five million, six hundred forty-seven thousand, seven hundred thirty-one".