2157572085 has 32 divisors (see below), whose sum is σ = 3740204160. Its totient is φ = 1057824768.

The previous prime is 2157572077. The next prime is 2157572101. The reversal of 2157572085 is 5802757512.

It is not a de Polignac number, because 2157572085 - 2³ = 2157572077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87420 + ... + 109349.

It is an arithmetic number, because the mean of its divisors is an integer number (116881380).

Almost surely, 2^2157572085 is an apocalyptic number.

It is an amenable number.

2157572085 is a deficient number, since it is larger than the sum of its proper divisors (1582632075).

2157572085 is a wasteful number, since it uses less digits than its factorization.

2157572085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196837.

The product of its (nonzero) digits is 196000, while the sum is 42.

The square root of 2157572085 is about 46449.6726037978. The cubic root of 2157572085 is about 1292.1763005574.

The spelling of 2157572085 in words is "two billion, one hundred fifty-seven million, five hundred seventy-two thousand, eighty-five".