50621001331 has 2 divisors, whose sum is σ = 50621001332. Its totient is φ = 50621001330.

The previous prime is 50621001287. The next prime is 50621001391. The reversal of 50621001331 is 13310012605.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50621001331 - 2¹³ = 50620993139 is a prime.

It is a super-2 number, since 2×50621001331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50621001391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25310500665 + 25310500666.

It is an arithmetic number, because the mean of its divisors is an integer number (25310500666).

Almost surely, 2^50621001331 is an apocalyptic number.

50621001331 is a deficient number, since it is larger than the sum of its proper divisors (1).

50621001331 is an equidigital number, since it uses as much as digits as its factorization.

50621001331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 50621001331 its reverse (13310012605), we get a palindrome (63931013936).

The spelling of 50621001331 in words is "fifty billion, six hundred twenty-one million, one thousand, three hundred thirty-one".