72791755 has 8 divisors (see below), whose sum is σ = 91947600. Its totient is φ = 55168416.

The previous prime is 72791753. The next prime is 72791783. The reversal of 72791755 is 55719727.

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 72791755 - 2¹ = 72791753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72791753) 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, 383020 + ... + 383209.

It is an arithmetic number, because the mean of its divisors is an integer number (11493450).

Almost surely, 2^72791755 is an apocalyptic number.

72791755 is a deficient number, since it is larger than the sum of its proper divisors (19155845).

72791755 is a wasteful number, since it uses less digits than its factorization.

72791755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766253.

The product of its digits is 154350, while the sum is 43.

The square root of 72791755 is about 8531.8084249472. The cubic root of 72791755 is about 417.5361317887.

The spelling of 72791755 in words is "seventy-two million, seven hundred ninety-one thousand, seven hundred fifty-five".