55101000 has 64 divisors (see below), whose sum is σ = 171924480. Its totient is φ = 14692800.

The previous prime is 55100993. The next prime is 55101023. The reversal of 55101000 is 10155.

It is a super-2 number, since 2×55101000² = 6072240402000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6184 + ... + 12183.

It is an arithmetic number, because the mean of its divisors is an integer number (2686320).

Almost surely, 2^55101000 is an apocalyptic number.

55101000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55101000 is an abundant number, since it is smaller than the sum of its proper divisors (116823480).

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

55101000 is a wasteful number, since it uses less digits than its factorization.

55101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18391 (or 18377 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 55101000 is about 7423.0047824314. The cubic root of 55101000 is about 380.5278905146.

Adding to 55101000 its reverse (10155), we get a palindrome (55111155).

The spelling of 55101000 in words is "fifty-five million, one hundred one thousand".