50542989 has 32 divisors (see below), whose sum is σ = 84197376. Its totient is φ = 26300160.

The previous prime is 50542981. The next prime is 50543039. The reversal of 50542989 is 98924505.

It is not a de Polignac number, because 50542989 - 2³ = 50542981 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50542989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50542981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8784 + ... + 13350.

It is an arithmetic number, because the mean of its divisors is an integer number (2631168).

Almost surely, 2^50542989 is an apocalyptic number.

It is an amenable number.

50542989 is a deficient number, since it is larger than the sum of its proper divisors (33654387).

50542989 is a wasteful number, since it uses less digits than its factorization.

50542989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 50542989 is about 7109.3592538287. The cubic root of 50542989 is about 369.7319436598.

The spelling of 50542989 in words is "fifty million, five hundred forty-two thousand, nine hundred eighty-nine".