50991255 has 32 divisors (see below), whose sum is σ = 103603200. Its totient is φ = 23309856.

The previous prime is 50991233. The next prime is 50991271. The reversal of 50991255 is 55219905.

It is not a de Polignac number, because 50991255 - 2¹³ = 50983063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26035 + ... + 27924.

It is an arithmetic number, because the mean of its divisors is an integer number (3237600).

Almost surely, 2^50991255 is an apocalyptic number.

50991255 is an abundant number, since it is smaller than the sum of its proper divisors (52611945).

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

50991255 is a wasteful number, since it uses less digits than its factorization.

50991255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53980 (or 53974 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 50991255 is about 7140.8161298272. The cubic root of 50991255 is about 370.8217794939.

The spelling of 50991255 in words is "fifty million, nine hundred ninety-one thousand, two hundred fifty-five".