55078950 has 48 divisors (see below), whose sum is σ = 137687616. Its totient is φ = 14570400.

The previous prime is 55078939. The next prime is 55078979. The reversal of 55078950 is 5987055.

It is a junction number, because it is equal to n+sod(n) for n = 55078899 and 55078908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18249 + ... + 21051.

It is an arithmetic number, because the mean of its divisors is an integer number (2868492).

Almost surely, 2^55078950 is an apocalyptic number.

55078950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55078950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68843808).

55078950 is an abundant number, since it is smaller than the sum of its proper divisors (82608666).

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

55078950 is a wasteful number, since it uses less digits than its factorization.

55078950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2949 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 39.

The square root of 55078950 is about 7421.5193862174. The cubic root of 55078950 is about 380.4771245910.

The spelling of 55078950 in words is "fifty-five million, seventy-eight thousand, nine hundred fifty".