50921472 has 136 divisors (see below), whose sum is σ = 159382336. Its totient is φ = 14155776.

The previous prime is 50921461. The next prime is 50921483. The reversal of 50921472 is 27412905.

It is an interprime number because it is at equal distance from previous prime (50921461) and next prime (50921483).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376238 + ... + 1376274.

Almost surely, 2^50921472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50921472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79691168).

50921472 is an abundant number, since it is smaller than the sum of its proper divisors (108460864).

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

50921472 is an frugal number, since it uses more digits than its factorization.

50921472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 50921472 is about 7135.9282507604. The cubic root of 50921472 is about 370.6525421758.

The spelling of 50921472 in words is "fifty million, nine hundred twenty-one thousand, four hundred seventy-two".