45972649 has 2 divisors, whose sum is σ = 45972650. Its totient is φ = 45972648.

The previous prime is 45972631. The next prime is 45972671. The reversal of 45972649 is 94627954.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 17808400 = 5307^2 + 4220^2 .

It is a cyclic number.

It is not a de Polignac number, because 45972649 - 2⁵ = 45972617 is a prime.

It is a super-2 number, since 2×45972649² = 4226968912154402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45972599 and 45972608.

It is not a weakly prime, because it can be changed into another prime (45972449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22986324 + 22986325.

It is an arithmetic number, because the mean of its divisors is an integer number (22986325).

Almost surely, 2^45972649 is an apocalyptic number.

It is an amenable number.

45972649 is a deficient number, since it is larger than the sum of its proper divisors (1).

45972649 is an equidigital number, since it uses as much as digits as its factorization.

45972649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 45972649 is about 6780.3133408420. The cubic root of 45972649 is about 358.2337585712.

The spelling of 45972649 in words is "forty-five million, nine hundred seventy-two thousand, six hundred forty-nine".