45457491 has 8 divisors (see below), whose sum is σ = 61087744. Its totient is φ = 30066120.

The previous prime is 45457463. The next prime is 45457543. The reversal of 45457491 is 19475454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45457491 - 2⁵ = 45457459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45457091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59275 + ... + 60036.

It is an arithmetic number, because the mean of its divisors is an integer number (7635968).

Almost surely, 2^45457491 is an apocalyptic number.

45457491 is a deficient number, since it is larger than the sum of its proper divisors (15630253).

45457491 is a wasteful number, since it uses less digits than its factorization.

45457491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119441.

The product of its digits is 100800, while the sum is 39.

The square root of 45457491 is about 6742.2170685910. The cubic root of 45457491 is about 356.8906364945.

The spelling of 45457491 in words is "forty-five million, four hundred fifty-seven thousand, four hundred ninety-one".