45065856 has 128 divisors (see below), whose sum is σ = 133954560. Its totient is φ = 13306880.

The previous prime is 45065851. The next prime is 45065879. The reversal of 45065856 is 65856054.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45065851) 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, 198415 + ... + 198641.

It is an arithmetic number, because the mean of its divisors is an integer number (1046520).

Almost surely, 2^45065856 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 45065856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66977280).

45065856 is an abundant number, since it is smaller than the sum of its proper divisors (88888704).

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

45065856 is a wasteful number, since it uses less digits than its factorization.

45065856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 45065856 is about 6713.1107543374. The cubic root of 45065856 is about 355.8627590338.

The spelling of 45065856 in words is "forty-five million, sixty-five thousand, eight hundred fifty-six".