21054552301 has 4 divisors (see below), whose sum is σ = 21058180092. Its totient is φ = 21050924512.

The previous prime is 21054552269. The next prime is 21054552313. The reversal of 21054552301 is 10325545012.

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 15933003076 + 5121549225 = 126226^2 + 71565^2 .

It is a cyclic number.

It is not a de Polignac number, because 21054552301 - 2⁵ = 21054552269 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 21054552301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054552331) 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, 1805176 + ... + 1816801.

It is an arithmetic number, because the mean of its divisors is an integer number (5264545023).

Almost surely, 2^21054552301 is an apocalyptic number.

It is an amenable number.

21054552301 is a deficient number, since it is larger than the sum of its proper divisors (3627791).

21054552301 is an equidigital number, since it uses as much as digits as its factorization.

21054552301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627790.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 21054552301 in words is "twenty-one billion, fifty-four million, five hundred fifty-two thousand, three hundred one".