50988495251 has 4 divisors (see below), whose sum is σ = 51465023352. Its totient is φ = 50511967152.

The previous prime is 50988495221. The next prime is 50988495269. The reversal of 50988495251 is 15259488905.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50988495251 is a prime.

It is a super-2 number, since 2×50988495251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50988495221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238263890 + ... + 238264103.

It is an arithmetic number, because the mean of its divisors is an integer number (12866255838).

Almost surely, 2^50988495251 is an apocalyptic number.

50988495251 is a deficient number, since it is larger than the sum of its proper divisors (476528101).

50988495251 is a wasteful number, since it uses less digits than its factorization.

50988495251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476528100.

The product of its (nonzero) digits is 5184000, while the sum is 56.

The spelling of 50988495251 in words is "fifty billion, nine hundred eighty-eight million, four hundred ninety-five thousand, two hundred fifty-one".