572172556121 has 8 divisors (see below), whose sum is σ = 602699738400. Its totient is φ = 541686657600.

The previous prime is 572172556091. The next prime is 572172556127. The reversal of 572172556121 is 121655271275.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-572172556121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (572172556127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10292480 + ... + 10347921.

It is an arithmetic number, because the mean of its divisors is an integer number (75337467300).

Almost surely, 2^572172556121 is an apocalyptic number.

It is an amenable number.

572172556121 is a deficient number, since it is larger than the sum of its proper divisors (30527182279).

572172556121 is a wasteful number, since it uses less digits than its factorization.

572172556121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20641879.

The product of its digits is 294000, while the sum is 44.

The spelling of 572172556121 in words is "five hundred seventy-two billion, one hundred seventy-two million, five hundred fifty-six thousand, one hundred twenty-one".