50000155540 has 24 divisors (see below), whose sum is σ = 111176817192. Its totient is φ = 18823587840.

The previous prime is 50000155487. The next prime is 50000155567. The reversal of 50000155540 is 4555100005.

It can be written as a sum of positive squares in 4 ways, for example, as 22889874436 + 27110281104 = 151294^2 + 164652^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73529301 + ... + 73529980.

It is an arithmetic number, because the mean of its divisors is an integer number (4632367383).

Almost surely, 2^50000155540 is an apocalyptic number.

It is an amenable number.

50000155540 is an abundant number, since it is smaller than the sum of its proper divisors (61176661652).

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

50000155540 is a wasteful number, since it uses less digits than its factorization.

50000155540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147059307 (or 147059305 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

Adding to 50000155540 its reverse (4555100005), we get a palindrome (54555255545).

The spelling of 50000155540 in words is "fifty billion, one hundred fifty-five thousand, five hundred forty".