72277057 has 4 divisors (see below), whose sum is σ = 72978880. Its totient is φ = 71575236.

The previous prime is 72276983. The next prime is 72277067. The reversal of 72277057 is 75077227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72277057 - 2²³ = 63888449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72277067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350757 + ... + 350962.

It is an arithmetic number, because the mean of its divisors is an integer number (18244720).

Almost surely, 2^72277057 is an apocalyptic number.

It is an amenable number.

72277057 is a deficient number, since it is larger than the sum of its proper divisors (701823).

72277057 is a wasteful number, since it uses less digits than its factorization.

72277057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701822.

The product of its (nonzero) digits is 48020, while the sum is 37.

The square root of 72277057 is about 8501.5914392542. The cubic root of 72277057 is about 416.5496943828.

The spelling of 72277057 in words is "seventy-two million, two hundred seventy-seven thousand, fifty-seven".