74521544 has 16 divisors (see below), whose sum is σ = 140179020. Its totient is φ = 37140480.

The previous prime is 74521453. The next prime is 74521549. The reversal of 74521544 is 44512547.

It can be written as a sum of positive squares in 2 ways, for example, as 54612100 + 19909444 = 7390^2 + 4462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74521544.

It is not an unprimeable number, because it can be changed into a prime (74521549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12377 + ... + 17384.

Almost surely, 2^74521544 is an apocalyptic number.

It is an amenable number.

74521544 is a deficient number, since it is larger than the sum of its proper divisors (65657476).

74521544 is a wasteful number, since it uses less digits than its factorization.

74521544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30080 (or 30076 counting only the distinct ones).

The product of its digits is 22400, while the sum is 32.

The square root of 74521544 is about 8632.5861710150. The cubic root of 74521544 is about 420.8176513147.

The spelling of 74521544 in words is "seventy-four million, five hundred twenty-one thousand, five hundred forty-four".