72556149 has 8 divisors (see below), whose sum is σ = 99356320. Its totient is φ = 47063376.

The previous prime is 72556147. The next prime is 72556157. The reversal of 72556149 is 94165527.

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

It is not a de Polignac number, because 72556149 - 2¹ = 72556147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72556147) 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, 326719 + ... + 326940.

It is an arithmetic number, because the mean of its divisors is an integer number (12419540).

Almost surely, 2^72556149 is an apocalyptic number.

It is an amenable number.

72556149 is a deficient number, since it is larger than the sum of its proper divisors (26800171).

72556149 is a wasteful number, since it uses less digits than its factorization.

72556149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653699.

The product of its digits is 75600, while the sum is 39.

The square root of 72556149 is about 8517.9897276294. The cubic root of 72556149 is about 417.0851633822.

The spelling of 72556149 in words is "seventy-two million, five hundred fifty-six thousand, one hundred forty-nine".