45981937 has 2 divisors, whose sum is σ = 45981938. Its totient is φ = 45981936.

The previous prime is 45981893. The next prime is 45981941. The reversal of 45981937 is 73918954.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 7529536 = 6201^2 + 2744^2 .

It is a cyclic number.

It is not a de Polignac number, because 45981937 - 2¹⁹ = 45457649 is a prime.

It is a super-2 number, since 2×45981937² = 4228677060543938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45981137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22990968 + 22990969.

It is an arithmetic number, because the mean of its divisors is an integer number (22990969).

Almost surely, 2^45981937 is an apocalyptic number.

It is an amenable number.

45981937 is a deficient number, since it is larger than the sum of its proper divisors (1).

45981937 is an equidigital number, since it uses as much as digits as its factorization.

45981937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 45981937 is about 6780.9982303493. The cubic root of 45981937 is about 358.2578819806.

The spelling of 45981937 in words is "forty-five million, nine hundred eighty-one thousand, nine hundred thirty-seven".