45431604 has 30 divisors (see below), whose sum is σ = 118768034. Its totient is φ = 15143760.

The previous prime is 45431591. The next prime is 45431611. The reversal of 45431604 is 40613454.

45431604 is a `hidden beast` number, since 4 + 54 + 3 + 1 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34222500 + 11209104 = 5850^2 + 3348^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69787 + ... + 70434.

Almost surely, 2^45431604 is an apocalyptic number.

It is an amenable number.

45431604 is an abundant number, since it is smaller than the sum of its proper divisors (73336430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45431604 is a wasteful number, since it uses less digits than its factorization.

45431604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140237 (or 140226 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 45431604 is about 6740.2970260961. The cubic root of 45431604 is about 356.8228766158.

It can be divided in two parts, 45 and 431604, that added together give a square (431649 = 657²).

The spelling of 45431604 in words is "forty-five million, four hundred thirty-one thousand, six hundred four".