49517231 has 2 divisors, whose sum is σ = 49517232. Its totient is φ = 49517230.

The previous prime is 49517213. The next prime is 49517233. The reversal of 49517231 is 13271594.

Together with previous prime (49517213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49517231 is a prime.

It is a super-2 number, since 2×49517231² = 4903912331814722, which contains 22 as substring.

Together with 49517233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49517233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24758615 + 24758616.

It is an arithmetic number, because the mean of its divisors is an integer number (24758616).

Almost surely, 2^49517231 is an apocalyptic number.

49517231 is a deficient number, since it is larger than the sum of its proper divisors (1).

49517231 is an equidigital number, since it uses as much as digits as its factorization.

49517231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 49517231 is about 7036.8480870344. The cubic root of 49517231 is about 367.2136223613.

The spelling of 49517231 in words is "forty-nine million, five hundred seventeen thousand, two hundred thirty-one".