51955592 has 32 divisors (see below), whose sum is σ = 105862680. Its totient is φ = 23761920.

The previous prime is 51955571. The next prime is 51955601. The reversal of 51955592 is 29555915.

It can be written as a sum of positive squares in 4 ways, for example, as 28665316 + 23290276 = 5354^2 + 4826^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9542 + ... + 13962.

Almost surely, 2^51955592 is an apocalyptic number.

51955592 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51955592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52931340).

51955592 is an abundant number, since it is smaller than the sum of its proper divisors (53907088).

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

51955592 is a wasteful number, since it uses less digits than its factorization.

51955592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553 (or 4549 counting only the distinct ones).

The product of its digits is 101250, while the sum is 41.

The square root of 51955592 is about 7208.0227524613. The cubic root of 51955592 is about 373.1448332700.

The spelling of 51955592 in words is "fifty-one million, nine hundred fifty-five thousand, five hundred ninety-two".