61947559 has 2 divisors, whose sum is σ = 61947560. Its totient is φ = 61947558.

The previous prime is 61947547. The next prime is 61947593. The reversal of 61947559 is 95574916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61947559 - 2⁵ = 61947527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61947059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30973779 + 30973780.

It is an arithmetic number, because the mean of its divisors is an integer number (30973780).

Almost surely, 2^61947559 is an apocalyptic number.

61947559 is a deficient number, since it is larger than the sum of its proper divisors (1).

61947559 is an equidigital number, since it uses as much as digits as its factorization.

61947559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 46.

The square root of 61947559 is about 7870.6771627351. The cubic root of 61947559 is about 395.6775403552.

The spelling of 61947559 in words is "sixty-one million, nine hundred forty-seven thousand, five hundred fifty-nine".