61228571 has 2 divisors, whose sum is σ = 61228572. Its totient is φ = 61228570.

The previous prime is 61228547. The next prime is 61228579. The reversal of 61228571 is 17582216.

61228571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61228571 - 2¹⁴ = 61212187 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61228579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30614285 + 30614286.

It is an arithmetic number, because the mean of its divisors is an integer number (30614286).

Almost surely, 2^61228571 is an apocalyptic number.

61228571 is a deficient number, since it is larger than the sum of its proper divisors (1).

61228571 is an equidigital number, since it uses as much as digits as its factorization.

61228571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 61228571 is about 7824.8687528929. The cubic root of 61228571 is about 394.1407825725.

The spelling of 61228571 in words is "sixty-one million, two hundred twenty-eight thousand, five hundred seventy-one".