61133871 has 8 divisors (see below), whose sum is σ = 81572400. Its totient is φ = 40725632.

The previous prime is 61133869. The next prime is 61133881. The reversal of 61133871 is 17833116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61133871 - 2¹ = 61133869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61133851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2346 + ... + 11303.

It is an arithmetic number, because the mean of its divisors is an integer number (10196550).

Almost surely, 2^61133871 is an apocalyptic number.

61133871 is a deficient number, since it is larger than the sum of its proper divisors (20438529).

61133871 is a wasteful number, since it uses less digits than its factorization.

61133871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145.

The product of its digits is 3024, while the sum is 30.

The square root of 61133871 is about 7818.8151915747. The cubic root of 61133871 is about 393.9374766584.

Adding to 61133871 its reverse (17833116), we get a palindrome (78966987).

The spelling of 61133871 in words is "sixty-one million, one hundred thirty-three thousand, eight hundred seventy-one".