50211220 has 24 divisors (see below), whose sum is σ = 108294984. Its totient is φ = 19541376.

The previous prime is 50211199. The next prime is 50211253. The reversal of 50211220 is 2211205.

It can be written as a sum of positive squares in 4 ways, for example, as 20921476 + 29289744 = 4574^2 + 5412^2 .

It is a super-2 number, since 2×50211220² = 5042333227776800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50211220.

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, 33187 + ... + 34666.

It is an arithmetic number, because the mean of its divisors is an integer number (4512291).

Almost surely, 2^50211220 is an apocalyptic number.

It is an amenable number.

50211220 is an abundant number, since it is smaller than the sum of its proper divisors (58083764).

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

50211220 is a wasteful number, since it uses less digits than its factorization.

50211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67899 (or 67897 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 50211220 is about 7085.9875811350. The cubic root of 50211220 is about 368.9211818447.

Adding to 50211220 its reverse (2211205), we get a palindrome (52422425).

It can be divided in two parts, 5021 and 1220, that added together give a square (6241 = 79²).

The spelling of 50211220 in words is "fifty million, two hundred eleven thousand, two hundred twenty".