49681897 has 2 divisors, whose sum is σ = 49681898. Its totient is φ = 49681896.

The previous prime is 49681883. The next prime is 49681921. The reversal of 49681897 is 79818694.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48944016 + 737881 = 6996^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 49681897 - 2¹¹ = 49679849 is a prime.

It is not a weakly prime, because it can be changed into another prime (49681997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24840948 + 24840949.

It is an arithmetic number, because the mean of its divisors is an integer number (24840949).

Almost surely, 2^49681897 is an apocalyptic number.

It is an amenable number.

49681897 is a deficient number, since it is larger than the sum of its proper divisors (1).

49681897 is an equidigital number, since it uses as much as digits as its factorization.

49681897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The square root of 49681897 is about 7048.5386428678. The cubic root of 49681897 is about 367.6202195113.

The spelling of 49681897 in words is "forty-nine million, six hundred eighty-one thousand, eight hundred ninety-seven".