57220651 has 4 divisors (see below), whose sum is σ = 57380400. Its totient is φ = 57060904.

The previous prime is 57220627. The next prime is 57220679. The reversal of 57220651 is 15602275.

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

It is a cyclic number.

It is not a de Polignac number, because 57220651 - 2⁹ = 57220139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57220151) 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, 79336 + ... + 80053.

It is an arithmetic number, because the mean of its divisors is an integer number (14345100).

Almost surely, 2^57220651 is an apocalyptic number.

57220651 is a deficient number, since it is larger than the sum of its proper divisors (159749).

57220651 is a wasteful number, since it uses less digits than its factorization.

57220651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159748.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 57220651 is about 7564.4332900753. The cubic root of 57220651 is about 385.3460676505.

The spelling of 57220651 in words is "fifty-seven million, two hundred twenty thousand, six hundred fifty-one".