2457651 has 16 divisors (see below), whose sum is σ = 3847424. Its totient is φ = 1365984.

The previous prime is 2457647. The next prime is 2457667. The reversal of 2457651 is 1567542.

It is not a de Polignac number, because 2457651 - 2² = 2457647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2457641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (240464).

2^2457651 is an apocalyptic number.

2457651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2457651 is a deficient number, since it is larger than the sum of its proper divisors (1389773).

2457651 is a wasteful number, since it uses less digits than its factorization.

2457651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its digits is 8400, while the sum is 30.

The square root of 2457651 is about 1567.6897014397. The cubic root of 2457651 is about 134.9501599285.

It can be divided in two parts, 24 and 57651, that added together give a palindrome (57675).

The spelling of 2457651 in words is "two million, four hundred fifty-seven thousand, six hundred fifty-one".