50389257 has 4 divisors (see below), whose sum is σ = 67185680. Its totient is φ = 33592836.

The previous prime is 50389253. The next prime is 50389271. The reversal of 50389257 is 75298305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50389257 - 2² = 50389253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50389253) 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, 8398207 + ... + 8398212.

It is an arithmetic number, because the mean of its divisors is an integer number (16796420).

Almost surely, 2^50389257 is an apocalyptic number.

It is an amenable number.

50389257 is a deficient number, since it is larger than the sum of its proper divisors (16796423).

50389257 is a wasteful number, since it uses less digits than its factorization.

50389257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16796422.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 50389257 is about 7098.5390750492. The cubic root of 50389257 is about 369.3567029797.

The spelling of 50389257 in words is "fifty million, three hundred eighty-nine thousand, two hundred fifty-seven".