50291002381 has 4 divisors (see below), whose sum is σ = 50306240764. Its totient is φ = 50275764000.

The previous prime is 50291002351. The next prime is 50291002423. The reversal of 50291002381 is 18320019205.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8648070025 + 41642932356 = 92995^2 + 204066^2 .

It is a cyclic number.

It is not a de Polignac number, because 50291002381 - 2²⁷ = 50156784653 is a prime.

It is a super-2 number, since 2×50291002381² (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 (50291002351) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7614240 + ... + 7620841.

It is an arithmetic number, because the mean of its divisors is an integer number (12576560191).

Almost surely, 2^50291002381 is an apocalyptic number.

It is an amenable number.

50291002381 is a deficient number, since it is larger than the sum of its proper divisors (15238383).

50291002381 is a wasteful number, since it uses less digits than its factorization.

50291002381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15238382.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 50291002381 in words is "fifty billion, two hundred ninety-one million, two thousand, three hundred eighty-one".