73748521 has 8 divisors (see below), whose sum is σ = 91946304. Its totient is φ = 57466320.

The previous prime is 73748513. The next prime is 73748527. The reversal of 73748521 is 12584737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73748521 - 2³ = 73748513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73748527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478810 + ... + 478963.

It is an arithmetic number, because the mean of its divisors is an integer number (11493288).

Almost surely, 2^73748521 is an apocalyptic number.

It is an amenable number.

73748521 is a deficient number, since it is larger than the sum of its proper divisors (18197783).

73748521 is a wasteful number, since it uses less digits than its factorization.

73748521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957791.

The product of its digits is 47040, while the sum is 37.

The square root of 73748521 is about 8587.6959075179. The cubic root of 73748521 is about 419.3575229905.

The spelling of 73748521 in words is "seventy-three million, seven hundred forty-eight thousand, five hundred twenty-one".