45138497 has 2 divisors, whose sum is σ = 45138498. Its totient is φ = 45138496.

The previous prime is 45138493. The next prime is 45138551. The reversal of 45138497 is 79483154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44209201 + 929296 = 6649^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 45138497 - 2² = 45138493 is a prime.

It is a super-2 number, since 2×45138497² = 4074967822838018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45138493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22569248 + 22569249.

It is an arithmetic number, because the mean of its divisors is an integer number (22569249).

Almost surely, 2^45138497 is an apocalyptic number.

It is an amenable number.

45138497 is a deficient number, since it is larger than the sum of its proper divisors (1).

45138497 is an equidigital number, since it uses as much as digits as its factorization.

45138497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 45138497 is about 6718.5189588182. The cubic root of 45138497 is about 356.0538597339.

The spelling of 45138497 in words is "forty-five million, one hundred thirty-eight thousand, four hundred ninety-seven".