50355142531 has 4 divisors (see below), whose sum is σ = 50739533064. Its totient is φ = 49970752000.

The previous prime is 50355142507. The next prime is 50355142549. The reversal of 50355142531 is 13524155305.

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

It is a cyclic number.

It is not a de Polignac number, because 50355142531 - 2⁵ = 50355142499 is a prime.

It is a super-2 number, since 2×50355142531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50355142501) 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, 192195070 + ... + 192195331.

It is an arithmetic number, because the mean of its divisors is an integer number (12684883266).

Almost surely, 2^50355142531 is an apocalyptic number.

50355142531 is a deficient number, since it is larger than the sum of its proper divisors (384390533).

50355142531 is a wasteful number, since it uses less digits than its factorization.

50355142531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384390532.

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 50355142531 its reverse (13524155305), we get a palindrome (63879297836).

The spelling of 50355142531 in words is "fifty billion, three hundred fifty-five million, one hundred forty-two thousand, five hundred thirty-one".