56028528551 has 4 divisors (see below), whose sum is σ = 56098828632. Its totient is φ = 55958228472.

The previous prime is 56028528547. The next prime is 56028528553. The reversal of 56028528551 is 15582582065.

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

It is a cyclic number.

It is not a de Polignac number, because 56028528551 - 2² = 56028528547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56028528496 and 56028528505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56028528553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35148845 + ... + 35150438.

It is an arithmetic number, because the mean of its divisors is an integer number (14024707158).

Almost surely, 2^56028528551 is an apocalyptic number.

56028528551 is a deficient number, since it is larger than the sum of its proper divisors (70300081).

56028528551 is an equidigital number, since it uses as much as digits as its factorization.

56028528551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70300080.

The product of its (nonzero) digits is 960000, while the sum is 47.

The spelling of 56028528551 in words is "fifty-six billion, twenty-eight million, five hundred twenty-eight thousand, five hundred fifty-one".