2521261055 has 4 divisors (see below), whose sum is σ = 3025513272. Its totient is φ = 2017008840.

The previous prime is 2521261027. The next prime is 2521261103. The reversal of 2521261055 is 5501621252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2521261055 - 2⁸ = 2521260799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252126101 + ... + 252126110.

It is an arithmetic number, because the mean of its divisors is an integer number (756378318).

Almost surely, 2^2521261055 is an apocalyptic number.

2521261055 is a deficient number, since it is larger than the sum of its proper divisors (504252217).

2521261055 is an equidigital number, since it uses as much as digits as its factorization.

2521261055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504252216.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2521261055 is about 50212.1604295215. The cubic root of 2521261055 is about 1361.0453783105.

The spelling of 2521261055 in words is "two billion, five hundred twenty-one million, two hundred sixty-one thousand, fifty-five".