45192172 has 24 divisors (see below), whose sum is σ = 82639872. Its totient is φ = 21598800.

The previous prime is 45192167. The next prime is 45192197. The reversal of 45192172 is 27129154.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8097 + ... + 12487.

It is an arithmetic number, because the mean of its divisors is an integer number (3443328).

Almost surely, 2^45192172 is an apocalyptic number.

It is an amenable number.

45192172 is a deficient number, since it is larger than the sum of its proper divisors (37447700).

45192172 is a wasteful number, since it uses less digits than its factorization.

45192172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509 (or 4507 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 45192172 is about 6722.5123279917. The cubic root of 45192172 is about 356.1949338505.

The spelling of 45192172 in words is "forty-five million, one hundred ninety-two thousand, one hundred seventy-two".