50727721 has 8 divisors (see below), whose sum is σ = 55397088. Its totient is φ = 46068000.

The previous prime is 50727713. The next prime is 50727727. The reversal of 50727721 is 12772705.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50727721 - 2³ = 50727713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50727727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12786 + ... + 16276.

It is an arithmetic number, because the mean of its divisors is an integer number (6924636).

Almost surely, 2^50727721 is an apocalyptic number.

It is an amenable number.

50727721 is a deficient number, since it is larger than the sum of its proper divisors (4669367).

50727721 is a wasteful number, since it uses less digits than its factorization.

50727721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4823.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 50727721 is about 7122.3395734829. The cubic root of 50727721 is about 370.1818463316.

The spelling of 50727721 in words is "fifty million, seven hundred twenty-seven thousand, seven hundred twenty-one".