61089599 has 2 divisors, whose sum is σ = 61089600. Its totient is φ = 61089598.

The previous prime is 61089583. The next prime is 61089601. The reversal of 61089599 is 99598016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61089599 - 2⁴ = 61089583 is a prime.

It is a Sophie Germain prime.

Together with 61089601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61089529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30544799 + 30544800.

It is an arithmetic number, because the mean of its divisors is an integer number (30544800).

Almost surely, 2^61089599 is an apocalyptic number.

61089599 is a deficient number, since it is larger than the sum of its proper divisors (1).

61089599 is an equidigital number, since it uses as much as digits as its factorization.

61089599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 61089599 is about 7815.9835593481. The cubic root of 61089599 is about 393.8423596559.

It can be divided in two parts, 610 and 89599, that added together give a palindrome (90209).

The spelling of 61089599 in words is "sixty-one million, eighty-nine thousand, five hundred ninety-nine".