50555501501 has 4 divisors (see below), whose sum is σ = 50555951292. Its totient is φ = 50555051712.

The previous prime is 50555501497. The next prime is 50555501519. The reversal of 50555501501 is 10510555505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10510555505 = 5 ⋅2102111101.

It can be written as a sum of positive squares in 2 ways, for example, as 17769156601 + 32786344900 = 133301^2 + 181070^2 .

It is a cyclic number.

It is not a de Polignac number, because 50555501501 - 2² = 50555501497 is a prime.

It is a super-2 number, since 2×50555501501² (a number of 22 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 (50555501531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105371 + ... + 334983.

It is an arithmetic number, because the mean of its divisors is an integer number (12638987823).

Almost surely, 2^50555501501 is an apocalyptic number.

It is an amenable number.

50555501501 is a deficient number, since it is larger than the sum of its proper divisors (449791).

50555501501 is a wasteful number, since it uses less digits than its factorization.

50555501501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449790.

The product of its (nonzero) digits is 15625, while the sum is 32.

The spelling of 50555501501 in words is "fifty billion, five hundred fifty-five million, five hundred one thousand, five hundred one".