61002171 has 24 divisors (see below), whose sum is σ = 93594384. Its totient is φ = 38154240.

The previous prime is 61002169. The next prime is 61002181. The reversal of 61002171 is 17120016.

It is not a de Polignac number, because 61002171 - 2¹ = 61002169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61002131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87936 + ... + 88626.

It is an arithmetic number, because the mean of its divisors is an integer number (3899766).

Almost surely, 2^61002171 is an apocalyptic number.

61002171 is a deficient number, since it is larger than the sum of its proper divisors (32592213).

61002171 is a wasteful number, since it uses less digits than its factorization.

61002171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 61002171 is about 7810.3886587032. The cubic root of 61002171 is about 393.6543882742.

Adding to 61002171 its reverse (17120016), we get a palindrome (78122187).

The spelling of 61002171 in words is "sixty-one million, two thousand, one hundred seventy-one".