2531542551 has 4 divisors (see below), whose sum is σ = 3375390072. Its totient is φ = 1687695032.

The previous prime is 2531542547. The next prime is 2531542571. The reversal of 2531542551 is 1552451352.

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 2531542551 - 2² = 2531542547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531542511) 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, 421923756 + ... + 421923761.

It is an arithmetic number, because the mean of its divisors is an integer number (843847518).

Almost surely, 2^2531542551 is an apocalyptic number.

2531542551 is a deficient number, since it is larger than the sum of its proper divisors (843847521).

2531542551 is an equidigital number, since it uses as much as digits as its factorization.

2531542551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843847520.

The product of its digits is 30000, while the sum is 33.

The square root of 2531542551 is about 50314.4368049569. The cubic root of 2531542551 is about 1362.8929463493.

The spelling of 2531542551 in words is "two billion, five hundred thirty-one million, five hundred forty-two thousand, five hundred fifty-one".