55051311123 has 32 divisors (see below), whose sum is σ = 86444089920. Its totient is φ = 34506362880.

The previous prime is 55051311097. The next prime is 55051311127. The reversal of 55051311123 is 32111315055.

55051311123 is a `hidden beast` number, since 5 + 505 + 1 + 31 + 1 + 123 = 666.

It is not a de Polignac number, because 55051311123 - 2¹⁰ = 55051310099 is a prime.

It is a super-2 number, since 2×55051311123² (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).

It is not an unprimeable number, because it can be changed into a prime (55051311127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387063 + ... + 509823.

It is an arithmetic number, because the mean of its divisors is an integer number (2701377810).

Almost surely, 2^55051311123 is an apocalyptic number.

55051311123 is a deficient number, since it is larger than the sum of its proper divisors (31392778797).

55051311123 is a wasteful number, since it uses less digits than its factorization.

55051311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123764 (or 123758 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 55051311123 its reverse (32111315055), we get a palindrome (87162626178).

The spelling of 55051311123 in words is "fifty-five billion, fifty-one million, three hundred eleven thousand, one hundred twenty-three".