45415491 has 32 divisors (see below), whose sum is σ = 70260480. Its totient is φ = 25804800.

The previous prime is 45415477. The next prime is 45415493. The reversal of 45415491 is 19451454.

It is not a de Polignac number, because 45415491 - 2⁵ = 45415459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (45415493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70531 + ... + 71171.

It is an arithmetic number, because the mean of its divisors is an integer number (2195640).

Almost surely, 2^45415491 is an apocalyptic number.

45415491 is a deficient number, since it is larger than the sum of its proper divisors (24844989).

45415491 is a wasteful number, since it uses less digits than its factorization.

45415491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its digits is 14400, while the sum is 33.

The square root of 45415491 is about 6739.1016463621. The cubic root of 45415491 is about 356.7806874321.

The spelling of 45415491 in words is "forty-five million, four hundred fifteen thousand, four hundred ninety-one".