50871531 has 32 divisors (see below), whose sum is σ = 77276160. Its totient is φ = 29569536.

The previous prime is 50871523. The next prime is 50871551. The reversal of 50871531 is 13517805.

50871531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50871531 - 2³ = 50871523 is a prime.

It is a super-2 number, since 2×50871531² = 5175825332567922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50871551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44985 + ... + 46101.

It is an arithmetic number, because the mean of its divisors is an integer number (2414880).

Almost surely, 2^50871531 is an apocalyptic number.

50871531 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

50871531 is a deficient number, since it is larger than the sum of its proper divisors (26404629).

50871531 is a wasteful number, since it uses less digits than its factorization.

50871531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 50871531 is about 7132.4281279239. The cubic root of 50871531 is about 370.5313306146.

The spelling of 50871531 in words is "fifty million, eight hundred seventy-one thousand, five hundred thirty-one".