50721375 has 16 divisors (see below), whose sum is σ = 84400992. Its totient is φ = 27051200.

The previous prime is 50721361. The next prime is 50721379. The reversal of 50721375 is 57312705.

It is not a de Polignac number, because 50721375 - 2⁷ = 50721247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50721379) 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, 67254 + ... + 68003.

It is an arithmetic number, because the mean of its divisors is an integer number (5275062).

Almost surely, 2^50721375 is an apocalyptic number.

50721375 is a deficient number, since it is larger than the sum of its proper divisors (33679617).

50721375 is a wasteful number, since it uses less digits than its factorization.

50721375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135275 (or 135265 counting only the distinct ones).

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

The square root of 50721375 is about 7121.8940598692. The cubic root of 50721375 is about 370.1664091971.

The spelling of 50721375 in words is "fifty million, seven hundred twenty-one thousand, three hundred seventy-five".