50535989 has 4 divisors (see below), whose sum is σ = 57755424. Its totient is φ = 43316556.

The previous prime is 50535959. The next prime is 50536027. The reversal of 50535989 is 98953505.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 50535989 - 2⁸ = 50535733 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 (50535959) 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, 3609707 + ... + 3609720.

It is an arithmetic number, because the mean of its divisors is an integer number (14438856).

Almost surely, 2^50535989 is an apocalyptic number.

It is an amenable number.

50535989 is a deficient number, since it is larger than the sum of its proper divisors (7219435).

50535989 is an equidigital number, since it uses as much as digits as its factorization.

50535989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7219434.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 50535989 is about 7108.8669279991. The cubic root of 50535989 is about 369.7148740778.

The spelling of 50535989 in words is "fifty million, five hundred thirty-five thousand, nine hundred eighty-nine".