73624521 has 4 divisors (see below), whose sum is σ = 98166032. Its totient is φ = 49083012.

The previous prime is 73624519. The next prime is 73624531. The reversal of 73624521 is 12542637.

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 not a de Polignac number, because 73624521 - 2¹ = 73624519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73624511) 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, 12270751 + ... + 12270756.

It is an arithmetic number, because the mean of its divisors is an integer number (24541508).

Almost surely, 2^73624521 is an apocalyptic number.

It is an amenable number.

73624521 is a deficient number, since it is larger than the sum of its proper divisors (24541511).

73624521 is a wasteful number, since it uses less digits than its factorization.

73624521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24541510.

The product of its digits is 10080, while the sum is 30.

The square root of 73624521 is about 8580.4732386973. The cubic root of 73624521 is about 419.1223566727.

The spelling of 73624521 in words is "seventy-three million, six hundred twenty-four thousand, five hundred twenty-one".