50529987 has 20 divisors (see below), whose sum is σ = 79458280. Its totient is φ = 31912704.

The previous prime is 50529953. The next prime is 50529989. The reversal of 50529987 is 78992505.

It is a happy number.

It is not a de Polignac number, because 50529987 - 2¹⁰ = 50528963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50529989) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14878 + ... + 17955.

It is an arithmetic number, because the mean of its divisors is an integer number (3972914).

Almost surely, 2^50529987 is an apocalyptic number.

50529987 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

50529987 is a deficient number, since it is larger than the sum of its proper divisors (28928293).

50529987 is a wasteful number, since it uses less digits than its factorization.

50529987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32864 (or 32855 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 50529987 is about 7108.4447666139. Note that the first 3 decimals coincide. The cubic root of 50529987 is about 369.7002368752.

The spelling of 50529987 in words is "fifty million, five hundred twenty-nine thousand, nine hundred eighty-seven".