61771427 has 2 divisors, whose sum is σ = 61771428. Its totient is φ = 61771426.

The previous prime is 61771417. The next prime is 61771459. The reversal of 61771427 is 72417716.

61771427 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61771427 - 2¹² = 61767331 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61771417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30885713 + 30885714.

It is an arithmetic number, because the mean of its divisors is an integer number (30885714).

Almost surely, 2^61771427 is an apocalyptic number.

61771427 is a deficient number, since it is larger than the sum of its proper divisors (1).

61771427 is an equidigital number, since it uses as much as digits as its factorization.

61771427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16464, while the sum is 35.

The square root of 61771427 is about 7859.4800718623. The cubic root of 61771427 is about 395.3021818415.

The spelling of 61771427 in words is "sixty-one million, seven hundred seventy-one thousand, four hundred twenty-seven".