1054403500021 has 2 divisors, whose sum is σ = 1054403500022. Its totient is φ = 1054403500020.

The previous prime is 1054403499973. The next prime is 1054403500039. The reversal of 1054403500021 is 1200053044501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 590423192100 + 463980307921 = 768390^2 + 681161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054403500021 - 2²⁷ = 1054269282293 is a prime.

It is a super-2 number, since 2×1054403500021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1054403500421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527201750010 + 527201750011.

It is an arithmetic number, because the mean of its divisors is an integer number (527201750011).

Almost surely, 2^{1054403500021} is an apocalyptic number.

It is an amenable number.

1054403500021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1054403500021 is an equidigital number, since it uses as much as digits as its factorization.

1054403500021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 1054403500021 its reverse (1200053044501), we get a palindrome (2254456544522).

The spelling of 1054403500021 in words is "one trillion, fifty-four billion, four hundred three million, five hundred thousand, twenty-one".