57072266 has 8 divisors (see below), whose sum is σ = 87599424. Its totient is φ = 27872460.

The previous prime is 57072259. The next prime is 57072277. The reversal of 57072266 is 66227075.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331730 + ... + 331901.

It is an arithmetic number, because the mean of its divisors is an integer number (10949928).

Almost surely, 2^57072266 is an apocalyptic number.

57072266 is a deficient number, since it is larger than the sum of its proper divisors (30527158).

57072266 is a wasteful number, since it uses less digits than its factorization.

57072266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663676.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 57072266 is about 7554.6188520666. The cubic root of 57072266 is about 385.0126852513.

The spelling of 57072266 in words is "fifty-seven million, seventy-two thousand, two hundred sixty-six".