61225243 has 2 divisors, whose sum is σ = 61225244. Its totient is φ = 61225242.

The previous prime is 61225223. The next prime is 61225247. The reversal of 61225243 is 34252216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61225243 is a prime.

It is not a weakly prime, because it can be changed into another prime (61225247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30612621 + 30612622.

It is an arithmetic number, because the mean of its divisors is an integer number (30612622).

Almost surely, 2^61225243 is an apocalyptic number.

61225243 is a deficient number, since it is larger than the sum of its proper divisors (1).

61225243 is an equidigital number, since it uses as much as digits as its factorization.

61225243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 61225243 is about 7824.6560946792. The cubic root of 61225243 is about 394.1336414385.

Adding to 61225243 its reverse (34252216), we get a palindrome (95477459).

The spelling of 61225243 in words is "sixty-one million, two hundred twenty-five thousand, two hundred forty-three".