56523216 has 40 divisors (see below), whose sum is σ = 146553120. Its totient is φ = 18772096.

The previous prime is 56523211. The next prime is 56523221. The reversal of 56523216 is 61232565.

It is an interprime number because it is at equal distance from previous prime (56523211) and next prime (56523221).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56523211) 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, 12055 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (3663828).

Almost surely, 2^56523216 is an apocalyptic number.

56523216 is the 4019-th nonagonal number.

It is an amenable number.

56523216 is an abundant number, since it is smaller than the sum of its proper divisors (90029904).

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

56523216 is a wasteful number, since it uses less digits than its factorization.

56523216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323 (or 4317 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 56523216 is about 7518.1923359276. The cubic root of 56523216 is about 383.7740641398.

The spelling of 56523216 in words is "fifty-six million, five hundred twenty-three thousand, two hundred sixteen".