74924521 has 4 divisors (see below), whose sum is σ = 85628032. Its totient is φ = 64221012.

The previous prime is 74924497. The next prime is 74924573. The reversal of 74924521 is 12542947.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74924521 - 2⁷ = 74924393 is a prime.

It is a super-2 number, since 2×74924521² = 11227367694158882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74924021) 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, 5351745 + ... + 5351758.

It is an arithmetic number, because the mean of its divisors is an integer number (21407008).

Almost surely, 2^74924521 is an apocalyptic number.

It is an amenable number.

74924521 is a deficient number, since it is larger than the sum of its proper divisors (10703511).

74924521 is a wasteful number, since it uses less digits than its factorization.

74924521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703510.

The product of its digits is 20160, while the sum is 34.

The square root of 74924521 is about 8655.8951587921. The cubic root of 74924521 is about 421.5748152684.

The spelling of 74924521 in words is "seventy-four million, nine hundred twenty-four thousand, five hundred twenty-one".