61544161 has 8 divisors (see below), whose sum is σ = 70416000. Its totient is φ = 52692288.

The previous prime is 61544143. The next prime is 61544191. The reversal of 61544161 is 16144516.

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 61544161 - 2⁵ = 61544129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61544111) 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, 2340 + ... + 11338.

It is an arithmetic number, because the mean of its divisors is an integer number (8802000).

Almost surely, 2^61544161 is an apocalyptic number.

It is an amenable number.

61544161 is a deficient number, since it is larger than the sum of its proper divisors (8871839).

61544161 is an equidigital number, since it uses as much as digits as its factorization.

61544161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983.

The product of its digits is 2880, while the sum is 28.

The square root of 61544161 is about 7845.0086679366. The cubic root of 61544161 is about 394.8167948142.

Adding to 61544161 its reverse (16144516), we get a palindrome (77688677).

The spelling of 61544161 in words is "sixty-one million, five hundred forty-four thousand, one hundred sixty-one".