56015001001 has 4 divisors (see below), whose sum is σ = 56016040900. Its totient is φ = 56013961104.

The previous prime is 56015000999. The next prime is 56015001059. The reversal of 56015001001 is 10010051065.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53095219776 + 2919781225 = 230424^2 + 54035^2 .

It is a cyclic number.

It is not a de Polignac number, because 56015001001 - 2¹ = 56015000999 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 56015001001.

It is not an unprimeable number, because it can be changed into a prime (56015001101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434466 + ... + 548443.

It is an arithmetic number, because the mean of its divisors is an integer number (14004010225).

Almost surely, 2^56015001001 is an apocalyptic number.

It is an amenable number.

56015001001 is a deficient number, since it is larger than the sum of its proper divisors (1039899).

56015001001 is an equidigital number, since it uses as much as digits as its factorization.

56015001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039898.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 56015001001 its reverse (10010051065), we get a palindrome (66025052066).

The spelling of 56015001001 in words is "fifty-six billion, fifteen million, one thousand, one".