61545271 has 2 divisors, whose sum is σ = 61545272. Its totient is φ = 61545270.

The previous prime is 61545227. The next prime is 61545277. The reversal of 61545271 is 17254516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61545271 - 2⁹ = 61544759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61545277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30772635 + 30772636.

It is an arithmetic number, because the mean of its divisors is an integer number (30772636).

Almost surely, 2^61545271 is an apocalyptic number.

61545271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61545271 is an equidigital number, since it uses as much as digits as its factorization.

61545271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 61545271 is about 7845.0794132373. The cubic root of 61545271 is about 394.8191684160.

Adding to 61545271 its reverse (17254516), we get a palindrome (78799787).

It can be divided in two parts, 61545 and 271, that added together give a palindrome (61816).

The spelling of 61545271 in words is "sixty-one million, five hundred forty-five thousand, two hundred seventy-one".