55012223231 has 8 divisors (see below), whose sum is σ = 62884915200. Its totient is φ = 47142982008.

The previous prime is 55012223219. The next prime is 55012223243. The reversal of 55012223231 is 13232221055.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55012223219) and next prime (55012223243).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55012223231 is a prime.

It is a super-2 number, since 2×55012223231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55012223231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55012223251) 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, 828431 + ... + 892368.

It is an arithmetic number, because the mean of its divisors is an integer number (7860614400).

Almost surely, 2^55012223231 is an apocalyptic number.

55012223231 is a deficient number, since it is larger than the sum of its proper divisors (7872691969).

55012223231 is a wasteful number, since it uses less digits than its factorization.

55012223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725373.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 55012223231 its reverse (13232221055), we get a palindrome (68244444286).

The spelling of 55012223231 in words is "fifty-five billion, twelve million, two hundred twenty-three thousand, two hundred thirty-one".