55621556246 has 4 divisors (see below), whose sum is σ = 83432334372. Its totient is φ = 27810778122.

The previous prime is 55621556191. The next prime is 55621556261. The reversal of 55621556246 is 64265512655.

55621556246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×55621556246² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55621556246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13905389060 + ... + 13905389063.

It is an arithmetic number, because the mean of its divisors is an integer number (20858083593).

Almost surely, 2^55621556246 is an apocalyptic number.

55621556246 is a deficient number, since it is larger than the sum of its proper divisors (27810778126).

55621556246 is a wasteful number, since it uses less digits than its factorization.

55621556246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27810778125.

The product of its digits is 2160000, while the sum is 47.

The spelling of 55621556246 in words is "fifty-five billion, six hundred twenty-one million, five hundred fifty-six thousand, two hundred forty-six".