2172957 has 16 divisors (see below), whose sum is σ = 3100032. Its totient is φ = 1349120.

The previous prime is 2172949. The next prime is 2172967. The reversal of 2172957 is 7592712.

It is not a de Polignac number, because 2172957 - 2³ = 2172949 is a prime.

2172957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6832 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (193752).

2^2172957 is an apocalyptic number.

It is an amenable number.

2172957 is a deficient number, since it is larger than the sum of its proper divisors (927075).

2172957 is a wasteful number, since it uses less digits than its factorization.

2172957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its digits is 8820, while the sum is 33.

The square root of 2172957 is about 1474.0953157785. The cubic root of 2172957 is about 129.5240386098.

The spelling of 2172957 in words is "two million, one hundred seventy-two thousand, nine hundred fifty-seven".