2497491 has 6 divisors (see below), whose sum is σ = 3607500. Its totient is φ = 1664988.

The previous prime is 2497489. The next prime is 2497499. The reversal of 2497491 is 1947942.

It is not a de Polignac number, because 2497491 - 2¹ = 2497489 is a prime.

It is a super-2 number, since 2×2497491² = 12474922590162, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2497499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138741 + ... + 138758.

It is an arithmetic number, because the mean of its divisors is an integer number (601250).

2^2497491 is an apocalyptic number.

2497491 is a deficient number, since it is larger than the sum of its proper divisors (1110009).

2497491 is a wasteful number, since it uses less digits than its factorization.

2497491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277505 (or 277502 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2497491 is about 1580.3452154514. The cubic root of 2497491 is about 135.6754624737.

The spelling of 2497491 in words is "two million, four hundred ninety-seven thousand, four hundred ninety-one".