50561001005 has 4 divisors (see below), whose sum is σ = 60673201212. Its totient is φ = 40448800800.

The previous prime is 50561000981. The next prime is 50561001011. The reversal of 50561001005 is 50010016505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50010016505 = 5 ⋅10002003301.

It can be written as a sum of positive squares in 2 ways, for example, as 15940072516 + 34620928489 = 126254^2 + 186067^2 .

It is not a de Polignac number, because 50561001005 - 2²⁴ = 50544223789 is a prime.

It is a super-2 number, since 2×50561001005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5056100096 + ... + 5056100105.

It is an arithmetic number, because the mean of its divisors is an integer number (15168300303).

Almost surely, 2^50561001005 is an apocalyptic number.

It is an amenable number.

50561001005 is a deficient number, since it is larger than the sum of its proper divisors (10112200207).

50561001005 is a wasteful number, since it uses less digits than its factorization.

50561001005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112200206.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 50561001005 in words is "fifty billion, five hundred sixty-one million, one thousand, five".