74521552 has 80 divisors (see below), whose sum is σ = 173401600. Its totient is φ = 30989952.

The previous prime is 74521549. The next prime is 74521583. The reversal of 74521552 is 25512547.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202873 + ... + 203239.

It is an arithmetic number, because the mean of its divisors is an integer number (2167520).

Almost surely, 2^74521552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74521552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86700800).

74521552 is an abundant number, since it is smaller than the sum of its proper divisors (98880048).

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

74521552 is a wasteful number, since it uses less digits than its factorization.

74521552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 413 counting only the distinct ones).

The product of its digits is 14000, while the sum is 31.

The square root of 74521552 is about 8632.5866343756. The cubic root of 74521552 is about 420.8176663731.

The spelling of 74521552 in words is "seventy-four million, five hundred twenty-one thousand, five hundred fifty-two".