72053891 has 8 divisors (see below), whose sum is σ = 88681824. Its totient is φ = 57009600.

The previous prime is 72053887. The next prime is 72053899. The reversal of 72053891 is 19835027.

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 72053891 - 2² = 72053887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72053899) 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, 395810 + ... + 395991.

It is an arithmetic number, because the mean of its divisors is an integer number (11085228).

Almost surely, 2^72053891 is an apocalyptic number.

72053891 is a deficient number, since it is larger than the sum of its proper divisors (16627933).

72053891 is a wasteful number, since it uses less digits than its factorization.

72053891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791821.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 72053891 is about 8488.4563378744. The cubic root of 72053891 is about 416.1205329817.

The spelling of 72053891 in words is "seventy-two million, fifty-three thousand, eight hundred ninety-one".