55511000050 has 24 divisors (see below), whose sum is σ = 112636866672. Its totient is φ = 20185818000.

The previous prime is 55511000021. The next prime is 55511000057. The reversal of 55511000050 is 5000011555.

It is a super-2 number, since 2×55511000050² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 55510999985 and 55511000030.

It is not an unprimeable number, because it can be changed into a prime (55511000057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50463996 + ... + 50465095.

It is an arithmetic number, because the mean of its divisors is an integer number (4693202778).

Almost surely, 2^55511000050 is an apocalyptic number.

55511000050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55511000050 is an abundant number, since it is smaller than the sum of its proper divisors (57125866622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55511000050 is a wasteful number, since it uses less digits than its factorization.

55511000050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100929114 (or 100929109 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 22.

The spelling of 55511000050 in words is "fifty-five billion, five hundred eleven million, fifty", and thus it is an aban number.