50285721 has 16 divisors (see below), whose sum is σ = 69023808. Its totient is φ = 32544000.

The previous prime is 50285717. The next prime is 50285771. The reversal of 50285721 is 12758205.

It is not a de Polignac number, because 50285721 - 2² = 50285717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50285771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27021 + ... + 28821.

It is an arithmetic number, because the mean of its divisors is an integer number (4313988).

Almost surely, 2^50285721 is an apocalyptic number.

It is an amenable number.

50285721 is a deficient number, since it is larger than the sum of its proper divisors (18738087).

50285721 is a wasteful number, since it uses less digits than its factorization.

50285721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 50285721 is about 7091.2425568443. The cubic root of 50285721 is about 369.1035541944.

The spelling of 50285721 in words is "fifty million, two hundred eighty-five thousand, seven hundred twenty-one".