52091910 has 192 divisors, whose sum is σ = 161808192. Its totient is φ = 11943936.

The previous prime is 52091899. The next prime is 52091929. The reversal of 52091910 is 1919025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 536982 + ... + 537078.

It is an arithmetic number, because the mean of its divisors is an integer number (842751).

Almost surely, 2^52091910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52091910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80904096).

52091910 is an abundant number, since it is smaller than the sum of its proper divisors (109716282).

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

52091910 is a wasteful number, since it uses less digits than its factorization.

52091910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 52091910 is about 7217.4725493070. The cubic root of 52091910 is about 373.4708933625.

The spelling of 52091910 in words is "fifty-two million, ninety-one thousand, nine hundred ten".