2531992 has 8 divisors (see below), whose sum is σ = 4747500. Its totient is φ = 1265992.

The previous prime is 2531989. The next prime is 2531993. The reversal of 2531992 is 2991352.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158242 + ... + 158257.

2^2531992 is an apocalyptic number.

It is an amenable number.

2531992 is a deficient number, since it is larger than the sum of its proper divisors (2215508).

2531992 is a wasteful number, since it uses less digits than its factorization.

2531992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316505 (or 316501 counting only the distinct ones).

The product of its digits is 4860, while the sum is 31.

The square root of 2531992 is about 1591.2234286862. The cubic root of 2531992 is about 136.2973597390.

The spelling of 2531992 in words is "two million, five hundred thirty-one thousand, nine hundred ninety-two".