61534859 has 2 divisors, whose sum is σ = 61534860. Its totient is φ = 61534858.

The previous prime is 61534853. The next prime is 61534871. The reversal of 61534859 is 95843516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61534859 - 2¹⁶ = 61469323 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61534853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30767429 + 30767430.

It is an arithmetic number, because the mean of its divisors is an integer number (30767430).

Almost surely, 2^61534859 is an apocalyptic number.

61534859 is a deficient number, since it is larger than the sum of its proper divisors (1).

61534859 is an equidigital number, since it uses as much as digits as its factorization.

61534859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The square root of 61534859 is about 7844.4157844928. The cubic root of 61534859 is about 394.7969024810.

The spelling of 61534859 in words is "sixty-one million, five hundred thirty-four thousand, eight hundred fifty-nine".