61028447 has 2 divisors, whose sum is σ = 61028448. Its totient is φ = 61028446.

The previous prime is 61028393. The next prime is 61028483. The reversal of 61028447 is 74482016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61028447 - 2¹² = 61024351 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61028497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30514223 + 30514224.

It is an arithmetic number, because the mean of its divisors is an integer number (30514224).

Almost surely, 2^61028447 is an apocalyptic number.

61028447 is a deficient number, since it is larger than the sum of its proper divisors (1).

61028447 is an equidigital number, since it uses as much as digits as its factorization.

61028447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 61028447 is about 7812.0705961992. The cubic root of 61028447 is about 393.7109008963.

The spelling of 61028447 in words is "sixty-one million, twenty-eight thousand, four hundred forty-seven".