61043216 has 40 divisors (see below), whose sum is σ = 131491584. Its totient is φ = 27262080.

The previous prime is 61043207. The next prime is 61043233. The reversal of 61043216 is 61234016.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61043191 and 61043200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715 + ... + 11181.

Almost surely, 2^61043216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61043216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65745792).

61043216 is an abundant number, since it is smaller than the sum of its proper divisors (70448368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61043216 is a wasteful number, since it uses less digits than its factorization.

61043216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9519 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 61043216 is about 7813.0158069724. The cubic root of 61043216 is about 393.7426579298.

The spelling of 61043216 in words is "sixty-one million, forty-three thousand, two hundred sixteen".