61560959 has 2 divisors, whose sum is σ = 61560960. Its totient is φ = 61560958.

The previous prime is 61560853. The next prime is 61560977. The reversal of 61560959 is 95906516.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61560959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61560979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780479 + 30780480.

It is an arithmetic number, because the mean of its divisors is an integer number (30780480).

Almost surely, 2^61560959 is an apocalyptic number.

61560959 is a deficient number, since it is larger than the sum of its proper divisors (1).

61560959 is an equidigital number, since it uses as much as digits as its factorization.

61560959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 61560959 is about 7846.0792119376. The cubic root of 61560959 is about 394.8527122709.

The spelling of 61560959 in words is "sixty-one million, five hundred sixty thousand, nine hundred fifty-nine".