61356271 has 2 divisors, whose sum is σ = 61356272. Its totient is φ = 61356270.

The previous prime is 61356259. The next prime is 61356287. The reversal of 61356271 is 17265316.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61356271 - 2⁷ = 61356143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61356221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30678135 + 30678136.

It is an arithmetic number, because the mean of its divisors is an integer number (30678136).

Almost surely, 2^61356271 is an apocalyptic number.

61356271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61356271 is an equidigital number, since it uses as much as digits as its factorization.

61356271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 61356271 is about 7833.0243839784. The cubic root of 61356271 is about 394.4146026018.

The spelling of 61356271 in words is "sixty-one million, three hundred fifty-six thousand, two hundred seventy-one".