50155391 has 8 divisors (see below), whose sum is σ = 58923984. Its totient is φ = 42088320.

The previous prime is 50155381. The next prime is 50155393. The reversal of 50155391 is 19355105.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50155391 - 2¹⁸ = 49893247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50155393) 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, 175226 + ... + 175511.

It is an arithmetic number, because the mean of its divisors is an integer number (7365498).

Almost surely, 2^50155391 is an apocalyptic number.

50155391 is a deficient number, since it is larger than the sum of its proper divisors (8768593).

50155391 is a wasteful number, since it uses less digits than its factorization.

50155391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350761.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 50155391 is about 7082.0470910606. The cubic root of 50155391 is about 368.7843987445.

The spelling of 50155391 in words is "fifty million, one hundred fifty-five thousand, three hundred ninety-one".