61488161 has 16 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 49783248.

The previous prime is 61488157. The next prime is 61488169. The reversal of 61488161 is 16188416.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61488161 - 2² = 61488157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61488169) 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, 85160 + ... + 85878.

It is an arithmetic number, because the mean of its divisors is an integer number (4636800).

Almost surely, 2^61488161 is an apocalyptic number.

It is an amenable number.

61488161 is a deficient number, since it is larger than the sum of its proper divisors (12700639).

61488161 is a wasteful number, since it uses less digits than its factorization.

61488161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388.

The product of its digits is 9216, while the sum is 35.

The square root of 61488161 is about 7841.4387072781. The cubic root of 61488161 is about 394.6970084714.

The spelling of 61488161 in words is "sixty-one million, four hundred eighty-eight thousand, one hundred sixty-one".