61247305 has 12 divisors (see below), whose sum is σ = 85496580. Its totient is φ = 41997984.

The previous prime is 61247299. The next prime is 61247359. The reversal of 61247305 is 50374216.

It can be written as a sum of positive squares in 2 ways, for example, as 18593344 + 42653961 = 4312^2 + 6531^2 .

It is not a de Polignac number, because 61247305 - 2⁵ = 61247273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124750 + ... + 125239.

It is an arithmetic number, because the mean of its divisors is an integer number (7124715).

Almost surely, 2^61247305 is an apocalyptic number.

It is an amenable number.

61247305 is a deficient number, since it is larger than the sum of its proper divisors (24249275).

61247305 is a wasteful number, since it uses less digits than its factorization.

61247305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250008 (or 250001 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 61247305 is about 7826.0657421210. The cubic root of 61247305 is about 394.1809766647.

The spelling of 61247305 in words is "sixty-one million, two hundred forty-seven thousand, three hundred five".