55312212445 has 16 divisors (see below), whose sum is σ = 75860910720. Its totient is φ = 37926293184.

The previous prime is 55312212443. The next prime is 55312212479. The reversal of 55312212445 is 54421221355.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55312212445 - 2¹ = 55312212443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55312212445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312212443) 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, 881526 + ... + 942184.

It is an arithmetic number, because the mean of its divisors is an integer number (4741306920).

Almost surely, 2^55312212445 is an apocalyptic number.

It is an amenable number.

55312212445 is a deficient number, since it is larger than the sum of its proper divisors (20548698275).

55312212445 is a wasteful number, since it uses less digits than its factorization.

55312212445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86724.

The product of its digits is 48000, while the sum is 34.

The spelling of 55312212445 in words is "fifty-five billion, three hundred twelve million, two hundred twelve thousand, four hundred forty-five".