61489161 has 12 divisors (see below), whose sum is σ = 89069760. Its totient is φ = 40876440.

The previous prime is 61489157. The next prime is 61489177. The reversal of 61489161 is 16198416.

It is a happy number.

It is not a de Polignac number, because 61489161 - 2² = 61489157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61489061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6285 + ... + 12746.

It is an arithmetic number, because the mean of its divisors is an integer number (7422480).

Almost surely, 2^61489161 is an apocalyptic number.

It is an amenable number.

61489161 is a deficient number, since it is larger than the sum of its proper divisors (27580599).

61489161 is a wasteful number, since it uses less digits than its factorization.

61489161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19396 (or 19393 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 61489161 is about 7841.5024708279. The cubic root of 61489161 is about 394.6991481508.

The spelling of 61489161 in words is "sixty-one million, four hundred eighty-nine thousand, one hundred sixty-one".