61407271 has 2 divisors, whose sum is σ = 61407272. Its totient is φ = 61407270.

The previous prime is 61407223. The next prime is 61407277. The reversal of 61407271 is 17270416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61407271 - 2⁹ = 61406759 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 (61407277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30703635 + 30703636.

It is an arithmetic number, because the mean of its divisors is an integer number (30703636).

Almost surely, 2^61407271 is an apocalyptic number.

61407271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61407271 is an equidigital number, since it uses as much as digits as its factorization.

61407271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 61407271 is about 7836.2791553134. The cubic root of 61407271 is about 394.5238529070.

Adding to 61407271 its reverse (17270416), we get a palindrome (78677687).

The spelling of 61407271 in words is "sixty-one million, four hundred seven thousand, two hundred seventy-one".