10001020551 has 4 divisors (see below), whose sum is σ = 13334694072. Its totient is φ = 6667347032.

The previous prime is 10001020541. The next prime is 10001020567. The reversal of 10001020551 is 15502010001.

10001020551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10001020551 - 2¹⁰ = 10001019527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10001020551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001020501) 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 3 ways as a sum of consecutive naturals, for example, 1666836756 + ... + 1666836761.

It is an arithmetic number, because the mean of its divisors is an integer number (3333673518).

Almost surely, 2^10001020551 is an apocalyptic number.

10001020551 is a deficient number, since it is larger than the sum of its proper divisors (3333673521).

10001020551 is an equidigital number, since it uses as much as digits as its factorization.

10001020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333673520.

The product of its (nonzero) digits is 50, while the sum is 15.

Adding to 10001020551 its reverse (15502010001), we get a palindrome (25503030552).

The spelling of 10001020551 in words is "ten billion, one million, twenty thousand, five hundred fifty-one".