73921153 has 16 divisors (see below), whose sum is σ = 81095040. Its totient is φ = 67132800.

The previous prime is 73921139. The next prime is 73921157. The reversal of 73921153 is 35112937.

It is not a de Polignac number, because 73921153 - 2²¹ = 71824001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73921157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49173 + ... + 50653.

It is an arithmetic number, because the mean of its divisors is an integer number (5068440).

Almost surely, 2^73921153 is an apocalyptic number.

It is an amenable number.

73921153 is a deficient number, since it is larger than the sum of its proper divisors (7173887).

73921153 is a wasteful number, since it uses less digits than its factorization.

73921153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its digits is 5670, while the sum is 31.

The square root of 73921153 is about 8597.7411568388. The cubic root of 73921153 is about 419.6844814739.

The spelling of 73921153 in words is "seventy-three million, nine hundred twenty-one thousand, one hundred fifty-three".