50721312 has 48 divisors (see below), whose sum is σ = 133654752. Its totient is φ = 16842240.

The previous prime is 50721299. The next prime is 50721313. The reversal of 50721312 is 21312705.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50721313) 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, 28612 + ... + 30332.

It is an arithmetic number, because the mean of its divisors is an integer number (2784474).

Almost surely, 2^50721312 is an apocalyptic number.

It is an amenable number.

50721312 is an abundant number, since it is smaller than the sum of its proper divisors (82933440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50721312 is a wasteful number, since it uses less digits than its factorization.

50721312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 50721312 is about 7121.8896368871. The cubic root of 50721312 is about 370.1662559383.

The spelling of 50721312 in words is "fifty million, seven hundred twenty-one thousand, three hundred twelve".