45531427 has 2 divisors, whose sum is σ = 45531428. Its totient is φ = 45531426.

The previous prime is 45531419. The next prime is 45531449. The reversal of 45531427 is 72413554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45531427 - 2³ = 45531419 is a prime.

It is a super-2 number, since 2×45531427² = 4146221689312658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45531527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22765713 + 22765714.

It is an arithmetic number, because the mean of its divisors is an integer number (22765714).

Almost surely, 2^45531427 is an apocalyptic number.

45531427 is a deficient number, since it is larger than the sum of its proper divisors (1).

45531427 is an equidigital number, since it uses as much as digits as its factorization.

45531427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 45531427 is about 6747.6979037298. The cubic root of 45531427 is about 357.0840242975.

The spelling of 45531427 in words is "forty-five million, five hundred thirty-one thousand, four hundred twenty-seven".