45487172 has 12 divisors (see below), whose sum is σ = 84285180. Its totient is φ = 21405696.

The previous prime is 45487153. The next prime is 45487187. The reversal of 45487172 is 27178454.

It can be written as a sum of positive squares in 2 ways, for example, as 22600516 + 22886656 = 4754^2 + 4784^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334397 + ... + 334532.

It is an arithmetic number, because the mean of its divisors is an integer number (7023765).

Almost surely, 2^45487172 is an apocalyptic number.

It is an amenable number.

45487172 is a deficient number, since it is larger than the sum of its proper divisors (38798008).

45487172 is a wasteful number, since it uses less digits than its factorization.

45487172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668950 (or 668948 counting only the distinct ones).

The product of its digits is 62720, while the sum is 38.

The square root of 45487172 is about 6744.4178399622. The cubic root of 45487172 is about 356.9682956150.

The spelling of 45487172 in words is "forty-five million, four hundred eighty-seven thousand, one hundred seventy-two".