61151171 has 4 divisors (see below), whose sum is σ = 61190832. Its totient is φ = 61111512.

The previous prime is 61151147. The next prime is 61151173. The reversal of 61151171 is 17115116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61151171 - 2⁶ = 61151107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61151173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17420 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (15297708).

Almost surely, 2^61151171 is an apocalyptic number.

61151171 is a deficient number, since it is larger than the sum of its proper divisors (39661).

61151171 is a wasteful number, since it uses less digits than its factorization.

61151171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39660.

The product of its digits is 210, while the sum is 23.

The square root of 61151171 is about 7819.9214190425. The cubic root of 61151171 is about 393.9746326870.

Adding to 61151171 its reverse (17115116), we get a palindrome (78266287).

The spelling of 61151171 in words is "sixty-one million, one hundred fifty-one thousand, one hundred seventy-one".