50753721 has 16 divisors (see below), whose sum is σ = 72144000. Its totient is φ = 31627008.

The previous prime is 50753719. The next prime is 50753743. The reversal of 50753721 is 12735705.

It is not a de Polignac number, because 50753721 - 2¹ = 50753719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50753221) 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, 4260 + ... + 10938.

It is an arithmetic number, because the mean of its divisors is an integer number (4509000).

Almost surely, 2^50753721 is an apocalyptic number.

50753721 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

50753721 is a deficient number, since it is larger than the sum of its proper divisors (21390279).

50753721 is a wasteful number, since it uses less digits than its factorization.

50753721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 50753721 is about 7124.1645826019. The cubic root of 50753721 is about 370.2450798979.

The spelling of 50753721 in words is "fifty million, seven hundred fifty-three thousand, seven hundred twenty-one".