2531172 has 24 divisors (see below), whose sum is σ = 6750016. Its totient is φ = 723168.

The previous prime is 2531171. The next prime is 2531183. The reversal of 2531172 is 2711352.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2531171) 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, 14983 + ... + 15150.

2^2531172 is an apocalyptic number.

It is an amenable number.

2531172 is an abundant number, since it is smaller than the sum of its proper divisors (4218844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531172 is a wasteful number, since it uses less digits than its factorization.

2531172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30147 (or 30145 counting only the distinct ones).

The product of its digits is 420, while the sum is 21.

The square root of 2531172 is about 1590.9657444458. The cubic root of 2531172 is about 136.2826445922.

The spelling of 2531172 in words is "two million, five hundred thirty-one thousand, one hundred seventy-two".