2551263 has 32 divisors (see below), whose sum is σ = 4220160. Its totient is φ = 1347840.

The previous prime is 2551249. The next prime is 2551273. The reversal of 2551263 is 3621552.

It is not a de Polignac number, because 2551263 - 2⁴ = 2551247 is a prime.

2551263 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7995 + ... + 8307.

It is an arithmetic number, because the mean of its divisors is an integer number (131880).

2^2551263 is an apocalyptic number.

2551263 is a deficient number, since it is larger than the sum of its proper divisors (1668897).

2551263 is a wasteful number, since it uses less digits than its factorization.

2551263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its digits is 1800, while the sum is 24.

The square root of 2551263 is about 1597.2673539517. The cubic root of 2551263 is about 136.6422727299.

The spelling of 2551263 in words is "two million, five hundred fifty-one thousand, two hundred sixty-three".