2251555122 has 32 divisors (see below), whose sum is σ = 4542676992. Its totient is φ = 743949584.

The previous prime is 2251555093. The next prime is 2251555127. The reversal of 2251555122 is 2215551522.

It is a self number, because there is not a number n which added to its sum of digits gives 2251555122.

It is not an unprimeable number, because it can be changed into a prime (2251555127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380833 + ... + 386699.

It is an arithmetic number, because the mean of its divisors is an integer number (141958656).

Almost surely, 2^2251555122 is an apocalyptic number.

2251555122 is an abundant number, since it is smaller than the sum of its proper divisors (2291121870).

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

2251555122 is a wasteful number, since it uses less digits than its factorization.

2251555122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422.

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

The square root of 2251555122 is about 47450.5544962332. The cubic root of 2251555122 is about 1310.6725218447.

The spelling of 2251555122 in words is "two billion, two hundred fifty-one million, five hundred fifty-five thousand, one hundred twenty-two".