2521555122 has 8 divisors (see below), whose sum is σ = 5043110256. Its totient is φ = 840518372.

The previous prime is 2521555121. The next prime is 2521555129. The reversal of 2521555122 is 2215551252.

It is a sphenic number, since it is the product of 3 distinct primes.

2521555122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2521555122.

It is not an unprimeable number, because it can be changed into a prime (2521555121) 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, 210129588 + ... + 210129599.

It is an arithmetic number, because the mean of its divisors is an integer number (630388782).

Almost surely, 2^2521555122 is an apocalyptic number.

2521555122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2521555122 is a wasteful number, since it uses less digits than its factorization.

2521555122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420259192.

The product of its digits is 10000, while the sum is 30.

The square root of 2521555122 is about 50215.0885889889. The cubic root of 2521555122 is about 1361.0982913783.

The spelling of 2521555122 in words is "two billion, five hundred twenty-one million, five hundred fifty-five thousand, one hundred twenty-two".