61471187 has 2 divisors, whose sum is σ = 61471188. Its totient is φ = 61471186.

The previous prime is 61471153. The next prime is 61471217. The reversal of 61471187 is 78117416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61471187 - 2¹⁰ = 61470163 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61471987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30735593 + 30735594.

It is an arithmetic number, because the mean of its divisors is an integer number (30735594).

Almost surely, 2^61471187 is an apocalyptic number.

61471187 is a deficient number, since it is larger than the sum of its proper divisors (1).

61471187 is an equidigital number, since it uses as much as digits as its factorization.

61471187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 35.

The square root of 61471187 is about 7840.3563056790. The cubic root of 61471187 is about 394.6606860125.

The spelling of 61471187 in words is "sixty-one million, four hundred seventy-one thousand, one hundred eighty-seven".