61242563 has 2 divisors, whose sum is σ = 61242564. Its totient is φ = 61242562.

The previous prime is 61242553. The next prime is 61242581. The reversal of 61242563 is 36524216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61242563 - 2⁶ = 61242499 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 (61242553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30621281 + 30621282.

It is an arithmetic number, because the mean of its divisors is an integer number (30621282).

Almost surely, 2^61242563 is an apocalyptic number.

61242563 is a deficient number, since it is larger than the sum of its proper divisors (1).

61242563 is an equidigital number, since it uses as much as digits as its factorization.

61242563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 61242563 is about 7825.7627743243. The cubic root of 61242563 is about 394.1708034038.

Adding to 61242563 its reverse (36524216), we get a palindrome (97766779).

The spelling of 61242563 in words is "sixty-one million, two hundred forty-two thousand, five hundred sixty-three".