50738991 has 8 divisors (see below), whose sum is σ = 69091584. Its totient is φ = 33106200.

The previous prime is 50738981. The next prime is 50739019. The reversal of 50738991 is 19983705.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50738991 - 2⁶ = 50738927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50738981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179785 + ... + 180066.

It is an arithmetic number, because the mean of its divisors is an integer number (8636448).

Almost surely, 2^50738991 is an apocalyptic number.

50738991 is a deficient number, since it is larger than the sum of its proper divisors (18352593).

50738991 is a wasteful number, since it uses less digits than its factorization.

50738991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359901.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 50738991 is about 7123.1307021562. The cubic root of 50738991 is about 370.2092583029.

The spelling of 50738991 in words is "fifty million, seven hundred thirty-eight thousand, nine hundred ninety-one".