55190850 has 192 divisors, whose sum is σ = 167989248. Its totient is φ = 11808000.

The previous prime is 55190809. The next prime is 55190899. The reversal of 55190850 is 5809155.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 664909 + ... + 664991.

It is an arithmetic number, because the mean of its divisors is an integer number (874944).

Almost surely, 2^55190850 is an apocalyptic number.

55190850 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 55190850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83994624).

55190850 is an abundant number, since it is smaller than the sum of its proper divisors (112798398).

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

55190850 is a wasteful number, since it uses less digits than its factorization.

55190850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 55190850 is about 7429.0544485823. The cubic root of 55190850 is about 380.7346131008.

The spelling of 55190850 in words is "fifty-five million, one hundred ninety thousand, eight hundred fifty".