50781996 has 36 divisors (see below), whose sum is σ = 131101152. Its totient is φ = 16566624.

The previous prime is 50781989. The next prime is 50782001. The reversal of 50781996 is 69918705.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×50781996² = 5157622235488032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13315 + ... + 16698.

Almost surely, 2^50781996 is an apocalyptic number.

It is an amenable number.

50781996 is an abundant number, since it is smaller than the sum of its proper divisors (80319156).

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

50781996 is a wasteful number, since it uses less digits than its factorization.

50781996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30070 (or 30065 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 50781996 is about 7126.1487495000. The cubic root of 50781996 is about 370.3138218935.

The spelling of 50781996 in words is "fifty million, seven hundred eighty-one thousand, nine hundred ninety-six".