45721937 has 2 divisors, whose sum is σ = 45721938. Its totient is φ = 45721936.

The previous prime is 45721933. The next prime is 45721981. The reversal of 45721937 is 73912754.

45721937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45711121 + 10816 = 6761^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 45721937 - 2² = 45721933 is a prime.

It is a Chen prime.

It is equal to p_2759294 and since 45721937 and 2759294 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45721937.

It is not a weakly prime, because it can be changed into another prime (45721933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22860968 + 22860969.

It is an arithmetic number, because the mean of its divisors is an integer number (22860969).

Almost surely, 2^45721937 is an apocalyptic number.

It is an amenable number.

45721937 is a deficient number, since it is larger than the sum of its proper divisors (1).

45721937 is an equidigital number, since it uses as much as digits as its factorization.

45721937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 45721937 is about 6761.7998343636. The cubic root of 45721937 is about 357.5813615006.

The spelling of 45721937 in words is "forty-five million, seven hundred twenty-one thousand, nine hundred thirty-seven".