72791851 has 16 divisors (see below), whose sum is σ = 82188288. Its totient is φ = 63892800.

The previous prime is 72791837. The next prime is 72791857. The reversal of 72791851 is 15819727.

It is a cyclic number.

It is not a de Polignac number, because 72791851 - 2⁹ = 72791339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72791857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45670 + ... + 47236.

It is an arithmetic number, because the mean of its divisors is an integer number (5136768).

Almost surely, 2^72791851 is an apocalyptic number.

72791851 is a deficient number, since it is larger than the sum of its proper divisors (9396437).

72791851 is a wasteful number, since it uses less digits than its factorization.

72791851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722.

The product of its digits is 35280, while the sum is 40.

The square root of 72791851 is about 8531.8140509507. The cubic root of 72791851 is about 417.5363153418.

The spelling of 72791851 in words is "seventy-two million, seven hundred ninety-one thousand, eight hundred fifty-one".