56601655 has 16 divisors (see below), whose sum is σ = 74317824. Its totient is φ = 41042080.

The previous prime is 56601641. The next prime is 56601659. The reversal of 56601655 is 55610665.

It is not a de Polignac number, because 56601655 - 2¹⁹ = 56077367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56601655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56601659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19722 + ... + 22408.

It is an arithmetic number, because the mean of its divisors is an integer number (4644864).

Almost surely, 2^56601655 is an apocalyptic number.

56601655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56601655 is a deficient number, since it is larger than the sum of its proper divisors (17716169).

56601655 is a wasteful number, since it uses less digits than its factorization.

56601655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 56601655 is about 7523.4071403853. The cubic root of 56601655 is about 383.9515070962.

The spelling of 56601655 in words is "fifty-six million, six hundred one thousand, six hundred fifty-five".