61019099 has 2 divisors, whose sum is σ = 61019100. Its totient is φ = 61019098.

The previous prime is 61019087. The next prime is 61019141. The reversal of 61019099 is 99091016.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61019099 is a prime.

It is not a weakly prime, because it can be changed into another prime (61019009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30509549 + 30509550.

It is an arithmetic number, because the mean of its divisors is an integer number (30509550).

Almost surely, 2^61019099 is an apocalyptic number.

61019099 is a deficient number, since it is larger than the sum of its proper divisors (1).

61019099 is an equidigital number, since it uses as much as digits as its factorization.

61019099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 61019099 is about 7811.4722684011. The cubic root of 61019099 is about 393.6907977170.

The spelling of 61019099 in words is "sixty-one million, nineteen thousand, ninety-nine".