50551720 has 16 divisors (see below), whose sum is σ = 113741460. Its totient is φ = 20220672.

The previous prime is 50551661. The next prime is 50551741. The reversal of 50551720 is 2715505.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47361924 + 3189796 = 6882^2 + 1786^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631857 + ... + 631936.

Almost surely, 2^50551720 is an apocalyptic number.

It is an amenable number.

50551720 is an abundant number, since it is smaller than the sum of its proper divisors (63189740).

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

50551720 is a wasteful number, since it uses less digits than its factorization.

50551720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263804 (or 1263800 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 50551720 is about 7109.9732770243. The cubic root of 50551720 is about 369.7532320970.

It can be divided in two parts, 505 and 51720, that added together give a palindrome (52225).

The spelling of 50551720 in words is "fifty million, five hundred fifty-one thousand, seven hundred twenty".