172572227051 has 8 divisors (see below), whose sum is σ = 197231016960. Its totient is φ = 147914840808.

The previous prime is 172572226999. The next prime is 172572227077. The reversal of 172572227051 is 150722275271.

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

It is not a de Polignac number, because 172572227051 - 2³⁴ = 155392357867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172572227851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72761 + ... + 591978.

It is an arithmetic number, because the mean of its divisors is an integer number (24653877120).

Almost surely, 2^172572227051 is an apocalyptic number.

172572227051 is a deficient number, since it is larger than the sum of its proper divisors (24658789909).

172572227051 is an equidigital number, since it uses as much as digits as its factorization.

172572227051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701833.

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 172572227051 in words is "one hundred seventy-two billion, five hundred seventy-two million, two hundred twenty-seven thousand, fifty-one".