61849559 has 2 divisors, whose sum is σ = 61849560. Its totient is φ = 61849558.

The previous prime is 61849537. The next prime is 61849573. The reversal of 61849559 is 95594816.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61849559 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61849589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30924779 + 30924780.

It is an arithmetic number, because the mean of its divisors is an integer number (30924780).

Almost surely, 2^61849559 is an apocalyptic number.

61849559 is a deficient number, since it is larger than the sum of its proper divisors (1).

61849559 is an equidigital number, since it uses as much as digits as its factorization.

61849559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The square root of 61849559 is about 7864.4490588979. The cubic root of 61849559 is about 395.4687784850.

The spelling of 61849559 in words is "sixty-one million, eight hundred forty-nine thousand, five hundred fifty-nine".