49188457 has 2 divisors, whose sum is σ = 49188458. Its totient is φ = 49188456.

The previous prime is 49188443. The next prime is 49188499. The reversal of 49188457 is 75488194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39677401 + 9511056 = 6299^2 + 3084^2 .

It is a cyclic number.

It is not a de Polignac number, because 49188457 - 2¹¹ = 49186409 is a prime.

It is not a weakly prime, because it can be changed into another prime (49188407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24594228 + 24594229.

It is an arithmetic number, because the mean of its divisors is an integer number (24594229).

Almost surely, 2^49188457 is an apocalyptic number.

It is an amenable number.

49188457 is a deficient number, since it is larger than the sum of its proper divisors (1).

49188457 is an equidigital number, since it uses as much as digits as its factorization.

49188457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 49188457 is about 7013.4482959526. The cubic root of 49188457 is about 366.3991013093.

The spelling of 49188457 in words is "forty-nine million, one hundred eighty-eight thousand, four hundred fifty-seven".