61445316 has 48 divisors (see below), whose sum is σ = 156139200. Its totient is φ = 18732672.

The previous prime is 61445303. The next prime is 61445339. The reversal of 61445316 is 61354416.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1966 + ... + 11258.

It is an arithmetic number, because the mean of its divisors is an integer number (3252900).

Almost surely, 2^61445316 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 61445316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78069600).

61445316 is an abundant number, since it is smaller than the sum of its proper divisors (94693884).

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

61445316 is a wasteful number, since it uses less digits than its factorization.

61445316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348 (or 9346 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 61445316 is about 7838.7062708077. The cubic root of 61445316 is about 394.6053121058.

The spelling of 61445316 in words is "sixty-one million, four hundred forty-five thousand, three hundred sixteen".