2591172 has 36 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 856560.

The previous prime is 2591167. The next prime is 2591189. The reversal of 2591172 is 2711952.

2591172 is a `hidden beast` number, since 2 + 591 + 1 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5797 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

2^2591172 is an apocalyptic number.

It is an amenable number.

2591172 is an abundant number, since it is smaller than the sum of its proper divisors (4013244).

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

2591172 is a wasteful number, since it uses less digits than its factorization.

2591172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 603 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2591172 is about 1609.7117754430. The cubic root of 2591172 is about 137.3510806444.

It can be divided in two parts, 259 and 1172, that added together give a triangular number (1431 = T₅₃).

The spelling of 2591172 in words is "two million, five hundred ninety-one thousand, one hundred seventy-two".