2522551 has 4 divisors (see below), whose sum is σ = 2530504. Its totient is φ = 2514600.

The previous prime is 2522543. The next prime is 2522557. The reversal of 2522551 is 1552252.

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 2522551 - 2³ = 2522543 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2522557) 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, 3480 + ... + 4141.

It is an arithmetic number, because the mean of its divisors is an integer number (632626).

2^2522551 is an apocalyptic number.

2522551 is the 1005-th centered pentagonal number.

2522551 is a deficient number, since it is larger than the sum of its proper divisors (7953).

2522551 is an equidigital number, since it uses as much as digits as its factorization.

2522551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7952.

The product of its digits is 1000, while the sum is 22.

The square root of 2522551 is about 1588.2540728737. The cubic root of 2522551 is about 136.1277454549.

Subtracting from 2522551 its reverse (1552252), we obtain a cube (970299 = 99³).

The spelling of 2522551 in words is "two million, five hundred twenty-two thousand, five hundred fifty-one".