73920051 has 12 divisors (see below), whose sum is σ = 112393320. Its totient is φ = 46686240.

The previous prime is 73920037. The next prime is 73920059. The reversal of 73920051 is 15002937.

It is not a de Polignac number, because 73920051 - 2¹¹ = 73918003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73919997 and 73920024.

It is not an unprimeable number, because it can be changed into a prime (73920059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215970 + ... + 216311.

It is an arithmetic number, because the mean of its divisors is an integer number (9366110).

Almost surely, 2^73920051 is an apocalyptic number.

73920051 is a deficient number, since it is larger than the sum of its proper divisors (38473269).

73920051 is a wasteful number, since it uses less digits than its factorization.

73920051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432306 (or 432303 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 73920051 is about 8597.6770699998. The cubic root of 73920051 is about 419.6823959427.

Adding to 73920051 its reverse (15002937), we get a palindrome (88922988).

The spelling of 73920051 in words is "seventy-three million, nine hundred twenty thousand, fifty-one".