74545500 has 48 divisors (see below), whose sum is σ = 217080864. Its totient is φ = 19878400.

The previous prime is 74545487. The next prime is 74545501. The reversal of 74545500 is 554547.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74545501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23349 + ... + 26348.

It is an arithmetic number, because the mean of its divisors is an integer number (4522518).

Almost surely, 2^74545500 is an apocalyptic number.

It is an amenable number.

74545500 is an abundant number, since it is smaller than the sum of its proper divisors (142535364).

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

74545500 is a wasteful number, since it uses less digits than its factorization.

74545500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49719 (or 49707 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 74545500 is about 8633.9735927324. The cubic root of 74545500 is about 420.8627390708.

The spelling of 74545500 in words is "seventy-four million, five hundred forty-five thousand, five hundred".