2521087919 has 4 divisors (see below), whose sum is σ = 2881243344. Its totient is φ = 2160932496.

The previous prime is 2521087889. The next prime is 2521087949. The reversal of 2521087919 is 9197801252.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2521087889) and next prime (2521087949).

It is a cyclic number.

It is not a de Polignac number, because 2521087919 - 2²⁴ = 2504310703 is a prime.

It is a super-2 number, since 2×2521087919² = 12711768590655501122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2521087919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521087949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180077702 + ... + 180077715.

It is an arithmetic number, because the mean of its divisors is an integer number (720310836).

Almost surely, 2^2521087919 is an apocalyptic number.

2521087919 is a deficient number, since it is larger than the sum of its proper divisors (360155425).

2521087919 is an equidigital number, since it uses as much as digits as its factorization.

2521087919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360155424.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 2521087919 is about 50210.4363554032. The cubic root of 2521087919 is about 1361.0142230880.

The spelling of 2521087919 in words is "two billion, five hundred twenty-one million, eighty-seven thousand, nine hundred nineteen".