55117350 has 72 divisors (see below), whose sum is σ = 150941232. Its totient is φ = 14414400.

The previous prime is 55117339. The next prime is 55117351. The reversal of 55117350 is 5371155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55117351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22695 + ... + 25005.

It is an arithmetic number, because the mean of its divisors is an integer number (2096406).

Almost surely, 2^55117350 is an apocalyptic number.

55117350 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 55117350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75470616).

55117350 is an abundant number, since it is smaller than the sum of its proper divisors (95823882).

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

55117350 is a wasteful number, since it uses less digits than its factorization.

55117350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 55117350 is about 7424.1060067863. The cubic root of 55117350 is about 380.5655245305.

The spelling of 55117350 in words is "fifty-five million, one hundred seventeen thousand, three hundred fifty".