61159243 has 2 divisors, whose sum is σ = 61159244. Its totient is φ = 61159242.

The previous prime is 61159211. The next prime is 61159279. The reversal of 61159243 is 34295116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61159243 - 2⁵ = 61159211 is a prime.

It is not a weakly prime, because it can be changed into another prime (65159243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30579621 + 30579622.

It is an arithmetic number, because the mean of its divisors is an integer number (30579622).

Almost surely, 2^61159243 is an apocalyptic number.

61159243 is a deficient number, since it is larger than the sum of its proper divisors (1).

61159243 is an equidigital number, since it uses as much as digits as its factorization.

61159243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 61159243 is about 7820.4375197300. The cubic root of 61159243 is about 393.9919669057.

The spelling of 61159243 in words is "sixty-one million, one hundred fifty-nine thousand, two hundred forty-three".