61248247 has 2 divisors, whose sum is σ = 61248248. Its totient is φ = 61248246.

The previous prime is 61248227. The next prime is 61248259. The reversal of 61248247 is 74284216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61248247 is a prime.

It is equal to p_3631786 and since 61248247 and 3631786 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61248217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30624123 + 30624124.

It is an arithmetic number, because the mean of its divisors is an integer number (30624124).

Almost surely, 2^61248247 is an apocalyptic number.

61248247 is a deficient number, since it is larger than the sum of its proper divisors (1).

61248247 is an equidigital number, since it uses as much as digits as its factorization.

61248247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 34.

The square root of 61248247 is about 7826.1259253861. The cubic root of 61248247 is about 394.1829975241.

The spelling of 61248247 in words is "sixty-one million, two hundred forty-eight thousand, two hundred forty-seven".