61245047 has 2 divisors, whose sum is σ = 61245048. Its totient is φ = 61245046.

The previous prime is 61245011. The next prime is 61245049. The reversal of 61245047 is 74054216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61245047 - 2¹² = 61240951 is a prime.

Together with 61245049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61245049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30622523 + 30622524.

It is an arithmetic number, because the mean of its divisors is an integer number (30622524).

Almost surely, 2^61245047 is an apocalyptic number.

61245047 is a deficient number, since it is larger than the sum of its proper divisors (1).

61245047 is an equidigital number, since it uses as much as digits as its factorization.

61245047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 61245047 is about 7825.9214792892. The cubic root of 61245047 is about 394.1761325246.

The spelling of 61245047 in words is "sixty-one million, two hundred forty-five thousand, forty-seven".