45731957 has 2 divisors, whose sum is σ = 45731958. Its totient is φ = 45731956.

The previous prime is 45731941. The next prime is 45731971. The reversal of 45731957 is 75913754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44209201 + 1522756 = 6649^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 45731957 - 2⁴ = 45731941 is a prime.

It is equal to p_2759855 and since 45731957 and 2759855 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45731857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22865978 + 22865979.

It is an arithmetic number, because the mean of its divisors is an integer number (22865979).

Almost surely, 2^45731957 is an apocalyptic number.

It is an amenable number.

45731957 is a deficient number, since it is larger than the sum of its proper divisors (1).

45731957 is an equidigital number, since it uses as much as digits as its factorization.

45731957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The square root of 45731957 is about 6762.5407207646. The cubic root of 45731957 is about 357.6074810088.

The spelling of 45731957 in words is "forty-five million, seven hundred thirty-one thousand, nine hundred fifty-seven".