55030950 has 144 divisors (see below), whose sum is σ = 166551840. Its totient is φ = 12925440.

The previous prime is 55030931. The next prime is 55030981. The reversal of 55030950 is 5903055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 134346 + ... + 134754.

It is an arithmetic number, because the mean of its divisors is an integer number (1156610).

Almost surely, 2^55030950 is an apocalyptic number.

55030950 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 55030950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83275920).

55030950 is an abundant number, since it is smaller than the sum of its proper divisors (111520890).

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

55030950 is a wasteful number, since it uses less digits than its factorization.

55030950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 27.

The square root of 55030950 is about 7418.2848421990. The cubic root of 55030950 is about 380.3665668686.

The spelling of 55030950 in words is "fifty-five million, thirty thousand, nine hundred fifty".