57072622 has 4 divisors (see below), whose sum is σ = 85608936. Its totient is φ = 28536310.

The previous prime is 57072619. The next prime is 57072629. The reversal of 57072622 is 22627075.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57072629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14268154 + ... + 14268157.

It is an arithmetic number, because the mean of its divisors is an integer number (21402234).

Almost surely, 2^57072622 is an apocalyptic number.

57072622 is a deficient number, since it is larger than the sum of its proper divisors (28536314).

57072622 is a wasteful number, since it uses less digits than its factorization.

57072622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28536313.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 57072622 is about 7554.6424137745. The cubic root of 57072622 is about 385.0134857816.

Adding to 57072622 its reverse (22627075), we get a palindrome (79699697).

The spelling of 57072622 in words is "fifty-seven million, seventy-two thousand, six hundred twenty-two".