61000271 has 2 divisors, whose sum is σ = 61000272. Its totient is φ = 61000270.

The previous prime is 61000249. The next prime is 61000283. The reversal of 61000271 is 17200016.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61000271 - 2⁶ = 61000207 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 (61000201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500135 + 30500136.

It is an arithmetic number, because the mean of its divisors is an integer number (30500136).

Almost surely, 2^61000271 is an apocalyptic number.

61000271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000271 is an equidigital number, since it uses as much as digits as its factorization.

61000271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 61000271 is about 7810.2670248846. The cubic root of 61000271 is about 393.6503012551.

Adding to 61000271 its reverse (17200016), we get a palindrome (78200287).

The spelling of 61000271 in words is "sixty-one million, two hundred seventy-one", and thus it is an aban number.