61545171 has 16 divisors (see below), whose sum is σ = 87945984. Its totient is φ = 38183904.

The previous prime is 61545167. The next prime is 61545179. The reversal of 61545171 is 17154516.

It is not a de Polignac number, because 61545171 - 2² = 61545167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61545179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9501 + ... + 14606.

It is an arithmetic number, because the mean of its divisors is an integer number (5496624).

Almost surely, 2^61545171 is an apocalyptic number.

61545171 is a deficient number, since it is larger than the sum of its proper divisors (26400813).

61545171 is a wasteful number, since it uses less digits than its factorization.

61545171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24170.

The product of its digits is 4200, while the sum is 30.

The square root of 61545171 is about 7845.0730398130. The cubic root of 61545171 is about 394.8189545792.

Adding to 61545171 its reverse (17154516), we get a palindrome (78699687).

It can be divided in two parts, 61545 and 171, that added together give a palindrome (61716).

The spelling of 61545171 in words is "sixty-one million, five hundred forty-five thousand, one hundred seventy-one".