50500000555551 has 6 divisors (see below), whose sum is σ = 72944445246920. Its totient is φ = 33666667037028.

The previous prime is 50500000555547. The next prime is 50500000555559. The reversal of 50500000555551 is 15555500000505.

It is a happy number.

50500000555551 is a `hidden beast` number, since 5 + 0 + 50 + 0 + 0 + 0 + 0 + 5 + 55 + 551 = 666.

It is not a de Polignac number, because 50500000555551 - 2² = 50500000555547 is a prime.

It is a super-2 number, since 2×50500000555551² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50500000555559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2805555586411 + ... + 2805555586428.

Almost surely, 2^{50500000555551} is an apocalyptic number.

50500000555551 is a deficient number, since it is larger than the sum of its proper divisors (22444444691369).

50500000555551 is a wasteful number, since it uses less digits than its factorization.

50500000555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611111172845 (or 5611111172842 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 50500000555551 in words is "fifty trillion, five hundred billion, five hundred fifty-five thousand, five hundred fifty-one".