49131287 has 2 divisors, whose sum is σ = 49131288. Its totient is φ = 49131286.

The previous prime is 49131259. The next prime is 49131317. The reversal of 49131287 is 78213194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49131287 - 2¹² = 49127191 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49131217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24565643 + 24565644.

It is an arithmetic number, because the mean of its divisors is an integer number (24565644).

Almost surely, 2^49131287 is an apocalyptic number.

49131287 is a deficient number, since it is larger than the sum of its proper divisors (1).

49131287 is an equidigital number, since it uses as much as digits as its factorization.

49131287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 49131287 is about 7009.3713698163. The cubic root of 49131287 is about 366.2570953830.

The spelling of 49131287 in words is "forty-nine million, one hundred thirty-one thousand, two hundred eighty-seven".