56001005501 has 32 divisors (see below), whose sum is σ = 65807880192. Its totient is φ = 46667649600.

The previous prime is 56001005449. The next prime is 56001005539. The reversal of 56001005501 is 10550010065.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56001005501 is a prime.

It is a super-2 number, since 2×56001005501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56001005201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16435340 + ... + 16438746.

It is an arithmetic number, because the mean of its divisors is an integer number (2056496256).

Almost surely, 2^56001005501 is an apocalyptic number.

It is an amenable number.

56001005501 is a deficient number, since it is larger than the sum of its proper divisors (9806874691).

56001005501 is a wasteful number, since it uses less digits than its factorization.

56001005501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929.

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 56001005501 its reverse (10550010065), we get a palindrome (66551015566).

It can be divided in two parts, 5600 and 1005501, that added together give a palindrome (1011101).

The spelling of 56001005501 in words is "fifty-six billion, one million, five thousand, five hundred one".