61247903 has 2 divisors, whose sum is σ = 61247904. Its totient is φ = 61247902.

The previous prime is 61247881. The next prime is 61247911. The reversal of 61247903 is 30974216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61247903 - 2⁸ = 61247647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61247903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61247933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30623951 + 30623952.

It is an arithmetic number, because the mean of its divisors is an integer number (30623952).

Almost surely, 2^61247903 is an apocalyptic number.

61247903 is a deficient number, since it is larger than the sum of its proper divisors (1).

61247903 is an equidigital number, since it uses as much as digits as its factorization.

61247903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 61247903 is about 7826.1039476869. The cubic root of 61247903 is about 394.1822595481.

The spelling of 61247903 in words is "sixty-one million, two hundred forty-seven thousand, nine hundred three".