50455421520 has 120 divisors (see below), whose sum is σ = 181948470624. Its totient is φ = 11532665088.

The previous prime is 50455421503. The next prime is 50455421543. The reversal of 50455421520 is 2512455405.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×50455421520² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2133454 + ... + 2156973.

Almost surely, 2^50455421520 is an apocalyptic number.

It is an amenable number.

50455421520 is an abundant number, since it is smaller than the sum of its proper divisors (131493049104).

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

50455421520 is a wasteful number, since it uses less digits than its factorization.

50455421520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290457 (or 4290444 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

Adding to 50455421520 its reverse (2512455405), we get a palindrome (52967876925).

The spelling of 50455421520 in words is "fifty billion, four hundred fifty-five million, four hundred twenty-one thousand, five hundred twenty".