61543159 has 2 divisors, whose sum is σ = 61543160. Its totient is φ = 61543158.

The previous prime is 61543127. The next prime is 61543169. The reversal of 61543159 is 95134516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61543159 - 2⁵ = 61543127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61543169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30771579 + 30771580.

It is an arithmetic number, because the mean of its divisors is an integer number (30771580).

Almost surely, 2^61543159 is an apocalyptic number.

61543159 is a deficient number, since it is larger than the sum of its proper divisors (1).

61543159 is an equidigital number, since it uses as much as digits as its factorization.

61543159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 34.

The square root of 61543159 is about 7844.9448054145. The cubic root of 61543159 is about 394.8146521328.

The spelling of 61543159 in words is "sixty-one million, five hundred forty-three thousand, one hundred fifty-nine".