45472891 has 2 divisors, whose sum is σ = 45472892. Its totient is φ = 45472890.

The previous prime is 45472879. The next prime is 45472897. The reversal of 45472891 is 19827454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45472891 - 2²³ = 37084283 is a prime.

It is not a weakly prime, because it can be changed into another prime (45472897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22736445 + 22736446.

It is an arithmetic number, because the mean of its divisors is an integer number (22736446).

Almost surely, 2^45472891 is an apocalyptic number.

45472891 is a deficient number, since it is larger than the sum of its proper divisors (1).

45472891 is an equidigital number, since it uses as much as digits as its factorization.

45472891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 45472891 is about 6743.3590294452. The cubic root of 45472891 is about 356.9309341817.

The spelling of 45472891 in words is "forty-five million, four hundred seventy-two thousand, eight hundred ninety-one".