55223201331 has 8 divisors (see below), whose sum is σ = 81812150160. Its totient is φ = 36815467536.

The previous prime is 55223201329. The next prime is 55223201333. The reversal of 55223201331 is 13310232255.

It is a happy number.

55223201331 is a `hidden beast` number, since 5 + 5 + 2 + 2 + 320 + 1 + 331 = 666.

It is an interprime number because it is at equal distance from previous prime (55223201329) and next prime (55223201333).

It is not a de Polignac number, because 55223201331 - 2¹ = 55223201329 is a prime.

It is a super-2 number, since 2×55223201331² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2045303753 = 55223201331 / (5 + 5 + 2 + 2 + 3 + 2 + 0 + 1 + 3 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 55223201295 and 55223201304.

It is not an unprimeable number, because it can be changed into a prime (55223201333) 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, 1022651850 + ... + 1022651903.

It is an arithmetic number, because the mean of its divisors is an integer number (10226518770).

Almost surely, 2^55223201331 is an apocalyptic number.

55223201331 is a deficient number, since it is larger than the sum of its proper divisors (26588948829).

55223201331 is a wasteful number, since it uses less digits than its factorization.

55223201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045303762 (or 2045303756 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 55223201331 its reverse (13310232255), we get a palindrome (68533433586).

The spelling of 55223201331 in words is "fifty-five billion, two hundred twenty-three million, two hundred one thousand, three hundred thirty-one".