50211220520 has 32 divisors (see below), whose sum is σ = 113011864200. Its totient is φ = 20077978368.

The previous prime is 50211220517. The next prime is 50211220531. The reversal of 50211220520 is 2502211205.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41909459524 + 8301760996 = 204718^2 + 91114^2 .

It is a super-2 number, since 2×50211220520² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 50211220492 and 50211220501.

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, 77519 + ... + 326238.

Almost surely, 2^50211220520 is an apocalyptic number.

It is an amenable number.

50211220520 is an abundant number, since it is smaller than the sum of its proper divisors (62800643680).

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

50211220520 is a wasteful number, since it uses less digits than its factorization.

50211220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406877 (or 406873 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 50211220520 its reverse (2502211205), we get a palindrome (52713431725).

The spelling of 50211220520 in words is "fifty billion, two hundred eleven million, two hundred twenty thousand, five hundred twenty".