50120001531 has 20 divisors (see below), whose sum is σ = 75168939384. Its totient is φ = 33280200000.

The previous prime is 50120001527. The next prime is 50120001553. The reversal of 50120001531 is 13510002105.

It is not a de Polignac number, because 50120001531 - 2² = 50120001527 is a prime.

It is a super-2 number, since 2×50120001531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50120001131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1212270 + ... + 1252931.

Almost surely, 2^50120001531 is an apocalyptic number.

50120001531 is a deficient number, since it is larger than the sum of its proper divisors (25048937853).

50120001531 is a wasteful number, since it uses less digits than its factorization.

50120001531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465464 (or 2465455 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 50120001531 its reverse (13510002105), we get a palindrome (63630003636).

The spelling of 50120001531 in words is "fifty billion, one hundred twenty million, one thousand, five hundred thirty-one".