2506931 has 12 divisors (see below), whose sum is σ = 2999472. Its totient is φ = 2052336.

The previous prime is 2506927. The next prime is 2506949. The reversal of 2506931 is 1396052.

It is not a de Polignac number, because 2506931 - 2² = 2506927 is a prime.

It is a super-2 number, since 2×2506931² = 12569406077522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2506931.

It is not an unprimeable number, because it can be changed into a prime (2506961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3365 + ... + 4041.

It is an arithmetic number, because the mean of its divisors is an integer number (249956).

2^2506931 is an apocalyptic number.

2506931 is a deficient number, since it is larger than the sum of its proper divisors (492541).

2506931 is an equidigital number, since it uses as much as digits as its factorization.

2506931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 2506931 is about 1583.3290877136. The cubic root of 2506931 is about 135.8461892893.

The spelling of 2506931 in words is "two million, five hundred six thousand, nine hundred thirty-one".