2507491 has 4 divisors (see below), whose sum is σ = 2865712. Its totient is φ = 2149272.

The previous prime is 2507489. The next prime is 2507567. The reversal of 2507491 is 1947052.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2507491 - 2¹ = 2507489 is a prime.

It is a super-2 number, since 2×2507491² = 12575022230162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2507291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179100 + ... + 179113.

It is an arithmetic number, because the mean of its divisors is an integer number (716428).

2^2507491 is an apocalyptic number.

2507491 is a deficient number, since it is larger than the sum of its proper divisors (358221).

2507491 is an equidigital number, since it uses as much as digits as its factorization.

2507491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358220.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2507491 is about 1583.5059204184. The cubic root of 2507491 is about 135.8563036751.

The spelling of 2507491 in words is "two million, five hundred seven thousand, four hundred ninety-one".