72155877 has 8 divisors (see below), whose sum is σ = 96272160. Its totient is φ = 48071760.

The previous prime is 72155861. The next prime is 72155903. The reversal of 72155877 is 77855127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72155877 - 2⁴ = 72155861 is a prime.

It is a super-3 number, since 3×72155877³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72155827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2199 + ... + 12212.

It is an arithmetic number, because the mean of its divisors is an integer number (12034020).

Almost surely, 2^72155877 is an apocalyptic number.

It is an amenable number.

72155877 is a deficient number, since it is larger than the sum of its proper divisors (24116283).

72155877 is a wasteful number, since it uses less digits than its factorization.

72155877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16083.

The product of its digits is 137200, while the sum is 42.

The square root of 72155877 is about 8494.4615485621. The cubic root of 72155877 is about 416.3167678700.

The spelling of 72155877 in words is "seventy-two million, one hundred fifty-five thousand, eight hundred seventy-seven".