55101012 has 48 divisors (see below), whose sum is σ = 140539392. Its totient is φ = 16727040.

The previous prime is 55100993. The next prime is 55101023. The reversal of 55101012 is 21010155.

It is a super-2 number, since 2×55101012² = 6072243046848288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55100982 and 55101000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968 + ... + 10680.

It is an arithmetic number, because the mean of its divisors is an integer number (2927904).

Almost surely, 2^55101012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55101012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70269696).

55101012 is an abundant number, since it is smaller than the sum of its proper divisors (85438380).

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

55101012 is a wasteful number, since it uses less digits than its factorization.

55101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8768 (or 8766 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 55101012 is about 7423.0055907294. The cubic root of 55101012 is about 380.5279181386.

Adding to 55101012 its reverse (21010155), we get a palindrome (76111167).

The spelling of 55101012 in words is "fifty-five million, one hundred one thousand, twelve".