61248217 has 2 divisors, whose sum is σ = 61248218. Its totient is φ = 61248216.

The previous prime is 61248197. The next prime is 61248223. The reversal of 61248217 is 71284216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 1201216 = 7749^2 + 1096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61248217 is a prime.

It is equal to p_3631783 and since 61248217 and 3631783 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (61248227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30624108 + 30624109.

It is an arithmetic number, because the mean of its divisors is an integer number (30624109).

Almost surely, 2^61248217 is an apocalyptic number.

It is an amenable number.

61248217 is a deficient number, since it is larger than the sum of its proper divisors (1).

61248217 is an equidigital number, since it uses as much as digits as its factorization.

61248217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 61248217 is about 7826.1240087287. The cubic root of 61248217 is about 394.1829331658.

It can be divided in two parts, 6124 and 8217, that added together give a palindrome (14341).

The spelling of 61248217 in words is "sixty-one million, two hundred forty-eight thousand, two hundred seventeen".