45938021 has 2 divisors, whose sum is σ = 45938022. Its totient is φ = 45938020.

The previous prime is 45938017. The next prime is 45938051. The reversal of 45938021 is 12083954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32615521 + 13322500 = 5711^2 + 3650^2 .

It is a cyclic number.

It is not a de Polignac number, because 45938021 - 2² = 45938017 is a prime.

It is a super-2 number, since 2×45938021² = 4220603546792882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45938051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22969010 + 22969011.

It is an arithmetic number, because the mean of its divisors is an integer number (22969011).

Almost surely, 2^45938021 is an apocalyptic number.

It is an amenable number.

45938021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45938021 is an equidigital number, since it uses as much as digits as its factorization.

45938021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 45938021 is about 6777.7592905030. The cubic root of 45938021 is about 358.1437917848.

The spelling of 45938021 in words is "forty-five million, nine hundred thirty-eight thousand, twenty-one".