2456531 has 16 divisors (see below), whose sum is σ = 3118848. Its totient is φ = 1879200.

The previous prime is 2456501. The next prime is 2456539. The reversal of 2456531 is 1356542.

It is a cyclic number.

It is not a de Polignac number, because 2456531 - 2¹⁰ = 2455507 is a prime.

It is a super-2 number, since 2×2456531² = 12069089107922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2456531.

It is not an unprimeable number, because it can be changed into a prime (2456539) 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, 4436 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (194928).

2^2456531 is an apocalyptic number.

2456531 is a deficient number, since it is larger than the sum of its proper divisors (662317).

2456531 is a wasteful number, since it uses less digits than its factorization.

2456531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602.

The product of its digits is 3600, while the sum is 26.

The square root of 2456531 is about 1567.3324471853. The cubic root of 2456531 is about 134.9296569978.

It can be divided in two parts, 245 and 6531, that added together give a palindrome (6776).

The spelling of 2456531 in words is "two million, four hundred fifty-six thousand, five hundred thirty-one".