2552551 has 4 divisors (see below), whose sum is σ = 2640600. Its totient is φ = 2464504.

The previous prime is 2552531. The next prime is 2552581. The reversal of 2552551 is 1552552.

It is a happy number.

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 2552551 - 2¹³ = 2544359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2552531) 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, 43981 + ... + 44038.

It is an arithmetic number, because the mean of its divisors is an integer number (660150).

2^2552551 is an apocalyptic number.

2552551 is the 715-th centered decagonal number.

2552551 is a deficient number, since it is larger than the sum of its proper divisors (88049).

2552551 is an equidigital number, since it uses as much as digits as its factorization.

2552551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88048.

The product of its digits is 2500, while the sum is 25.

The square root of 2552551 is about 1597.6704916847. The cubic root of 2552551 is about 136.6652633870.

Subtracting from 2552551 its reverse (1552552), we obtain a palindrome (999999).

The spelling of 2552551 in words is "two million, five hundred fifty-two thousand, five hundred fifty-one".