56105616 has 80 divisors (see below), whose sum is σ = 170159744. Its totient is φ = 15593472.

The previous prime is 56105611. The next prime is 56105663. The reversal of 56105616 is 61650165.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56105611) 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, 10176 + ... + 14688.

Almost surely, 2^56105616 is an apocalyptic number.

56105616 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56105616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85079872).

56105616 is an abundant number, since it is smaller than the sum of its proper divisors (114054128).

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

56105616 is a wasteful number, since it uses less digits than its factorization.

56105616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56105616 is about 7490.3682152482. The cubic root of 56105616 is about 382.8266047203.

The spelling of 56105616 in words is "fifty-six million, one hundred five thousand, six hundred sixteen".