45777591 has 18 divisors (see below), whose sum is σ = 66855152. Its totient is φ = 30183840.

The previous prime is 45777587. The next prime is 45777601. The reversal of 45777591 is 19577754.

45777591 is a `hidden beast` number, since 4 + 57 + 7 + 7 + 591 = 666.

It is not a de Polignac number, because 45777591 - 2² = 45777587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45777541) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 168786 + ... + 169056.

Almost surely, 2^45777591 is an apocalyptic number.

45777591 is a deficient number, since it is larger than the sum of its proper divisors (21077561).

45777591 is a wasteful number, since it uses less digits than its factorization.

45777591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 411 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 45777591 is about 6765.9139072264. The cubic root of 45777591 is about 357.7263886308.

The spelling of 45777591 in words is "forty-five million, seven hundred seventy-seven thousand, five hundred ninety-one".