57221651073 has 4 divisors (see below), whose sum is σ = 76295534768. Its totient is φ = 38147767380.

The previous prime is 57221651059. The next prime is 57221651099. The reversal of 57221651073 is 37015612275.

It is a happy number.

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 not a de Polignac number, because 57221651073 - 2⁴ = 57221651057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57221651023) 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, 9536941843 + ... + 9536941848.

It is an arithmetic number, because the mean of its divisors is an integer number (19073883692).

Almost surely, 2^57221651073 is an apocalyptic number.

It is an amenable number.

57221651073 is a deficient number, since it is larger than the sum of its proper divisors (19073883695).

57221651073 is a wasteful number, since it uses less digits than its factorization.

57221651073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073883694.

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 57221651073 in words is "fifty-seven billion, two hundred twenty-one million, six hundred fifty-one thousand, seventy-three".