101572157 has 4 divisors (see below), whose sum is σ = 106918080. Its totient is φ = 96226236.

The previous prime is 101572147. The next prime is 101572169. The reversal of 101572157 is 751275101.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101572157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101572147) 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, 2672933 + ... + 2672970.

It is an arithmetic number, because the mean of its divisors is an integer number (26729520).

Almost surely, 2^101572157 is an apocalyptic number.

It is an amenable number.

101572157 is a deficient number, since it is larger than the sum of its proper divisors (5345923).

101572157 is an equidigital number, since it uses as much as digits as its factorization.

101572157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5345922.

The product of its (nonzero) digits is 2450, while the sum is 29.

The square root of 101572157 is about 10078.3012953573. The cubic root of 101572157 is about 466.5786817685.

The spelling of 101572157 in words is "one hundred one million, five hundred seventy-two thousand, one hundred fifty-seven".