45571491 has 48 divisors (see below), whose sum is σ = 79299584. Its totient is φ = 25614144.

The previous prime is 45571469. The next prime is 45571511. The reversal of 45571491 is 19417554.

45571491 = 283³ + 284³.

45571491 is a `hidden beast` number, since 4 + 557 + 14 + 91 = 666.

It is not a de Polignac number, because 45571491 - 2¹⁰ = 45570467 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (25200) is a multiple of the sum of its prime divisors (450).

It is not an unprimeable number, because it can be changed into a prime (45571091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123990 + ... + 124356.

Almost surely, 2^45571491 is an apocalyptic number.

45571491 is a deficient number, since it is larger than the sum of its proper divisors (33728093).

45571491 is an equidigital number, since it uses as much as digits as its factorization.

45571491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 450 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 45571491 is about 6750.6659671472. The cubic root of 45571491 is about 357.1887286832.

It can be divided in two parts, 45 and 571491, that added together give a square (571536 = 756²).

The spelling of 45571491 in words is "forty-five million, five hundred seventy-one thousand, four hundred ninety-one".