61842559 has 2 divisors, whose sum is σ = 61842560. Its totient is φ = 61842558.

The previous prime is 61842497. The next prime is 61842563. The reversal of 61842559 is 95524816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61842559 - 2⁹ = 61842047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61849559) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30921279 + 30921280.

It is an arithmetic number, because the mean of its divisors is an integer number (30921280).

Almost surely, 2^61842559 is an apocalyptic number.

61842559 is a deficient number, since it is larger than the sum of its proper divisors (1).

61842559 is an equidigital number, since it uses as much as digits as its factorization.

61842559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 61842559 is about 7864.0040055941. The cubic root of 61842559 is about 395.4538584870.

The spelling of 61842559 in words is "sixty-one million, eight hundred forty-two thousand, five hundred fifty-nine".