2531915 has 8 divisors (see below), whose sum is σ = 3075408. Its totient is φ = 2000800.

The previous prime is 2531891. The next prime is 2531917. The reversal of 2531915 is 5191352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2531915 - 2¹⁴ = 2515531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531917) 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, 2636 + ... + 3465.

It is an arithmetic number, because the mean of its divisors is an integer number (384426).

2^2531915 is an apocalyptic number.

2531915 is a deficient number, since it is larger than the sum of its proper divisors (543493).

2531915 is an equidigital number, since it uses as much as digits as its factorization.

2531915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6189.

The product of its digits is 1350, while the sum is 26.

The square root of 2531915 is about 1591.1992332829. The cubic root of 2531915 is about 136.2959780860.

The spelling of 2531915 in words is "two million, five hundred thirty-one thousand, nine hundred fifteen".