55556251522 has 16 divisors (see below), whose sum is σ = 87724988640. Its totient is φ = 26314741728.

The previous prime is 55556251501. The next prime is 55556251523. The reversal of 55556251522 is 22515265555.

It is not an unprimeable number, because it can be changed into a prime (55556251523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380733 + ... + 1420399.

It is an arithmetic number, because the mean of its divisors is an integer number (5482811790).

Almost surely, 2^55556251522 is an apocalyptic number.

55556251522 is a deficient number, since it is larger than the sum of its proper divisors (32168737118).

55556251522 is a wasteful number, since it uses less digits than its factorization.

55556251522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76545.

The product of its digits is 750000, while the sum is 43.

The spelling of 55556251522 in words is "fifty-five billion, five hundred fifty-six million, two hundred fifty-one thousand, five hundred twenty-two".