61204271 has 2 divisors, whose sum is σ = 61204272. Its totient is φ = 61204270.

The previous prime is 61204249. The next prime is 61204279. The reversal of 61204271 is 17240216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61204271 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 (61204279) 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, 30602135 + 30602136.

It is an arithmetic number, because the mean of its divisors is an integer number (30602136).

Almost surely, 2^61204271 is an apocalyptic number.

61204271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61204271 is an equidigital number, since it uses as much as digits as its factorization.

61204271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 61204271 is about 7823.3158571030. The cubic root of 61204271 is about 394.0886343234.

Adding to 61204271 its reverse (17240216), we get a palindrome (78444487).

The spelling of 61204271 in words is "sixty-one million, two hundred four thousand, two hundred seventy-one".