2541121551 has 10 divisors (see below), whose sum is σ = 3795996512. Its totient is φ = 1694080980.

The previous prime is 2541121523. The next prime is 2541121559. The reversal of 2541121551 is 1551211452.

It is a happy number.

It is not a de Polignac number, because 2541121551 - 2⁷ = 2541121423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541121559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15685855 + ... + 15686016.

Almost surely, 2^2541121551 is an apocalyptic number.

2541121551 is a deficient number, since it is larger than the sum of its proper divisors (1254874961).

2541121551 is an equidigital number, since it uses as much as digits as its factorization.

2541121551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31371883 (or 31371874 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 2541121551 is about 50409.5382938586. The cubic root of 2541121551 is about 1364.6097809819.

The spelling of 2541121551 in words is "two billion, five hundred forty-one million, one hundred twenty-one thousand, five hundred fifty-one".