49531 has 2 divisors, whose sum is σ = 49532. Its totient is φ = 49530.

The previous prime is 49529. The next prime is 49537. The reversal of 49531 is 13594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49531 - 2¹ = 49529 is a prime.

It is a super-2 number, since 2×49531² = 4906639922, which contains 22 as substring.

Together with 49529, it forms a pair of twin primes.

It is equal to p₅₀₈₉ and since 49531 and 5089 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (49537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24765 + 24766.

It is an arithmetic number, because the mean of its divisors is an integer number (24766).

2⁴⁹⁵³¹ is an apocalyptic number.

49531 is a deficient number, since it is larger than the sum of its proper divisors (1).

49531 is an equidigital number, since it uses as much as digits as its factorization.

49531 is an odious number, because the sum of its binary digits is odd.

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

The square root of 49531 is about 222.5556110279. Note that the first 3 decimals coincide. The cubic root of 49531 is about 36.7247655604.

Subtracting from 49531 its reverse (13594), we obtain a cube (35937 = 33³).

The spelling of 49531 in words is "forty-nine thousand, five hundred thirty-one".