1055104401321 has 24 divisors (see below), whose sum is σ = 1526697702504. Its totient is φ = 702176962560.

The previous prime is 1055104401193. The next prime is 1055104401359. The reversal of 1055104401321 is 1231044015501.

1055104401321 is a `hidden beast` number, since 10 + 5 + 510 + 4 + 4 + 0 + 132 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1843500096 + 1053260901225 = 42936^2 + 1026285^2 .

It is not a de Polignac number, because 1055104401321 - 2⁷ = 1055104401193 is a prime.

It is a super-2 number, since 2×1055104401321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055104408321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16522165 + ... + 16585901.

It is an arithmetic number, because the mean of its divisors is an integer number (63612404271).

Almost surely, 2^{1055104401321} is an apocalyptic number.

It is an amenable number.

1055104401321 is a deficient number, since it is larger than the sum of its proper divisors (471593301183).

1055104401321 is a wasteful number, since it uses less digits than its factorization.

1055104401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66921 (or 66918 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 1055104401321 its reverse (1231044015501), we get a palindrome (2286148416822).

The spelling of 1055104401321 in words is "one trillion, fifty-five billion, one hundred four million, four hundred one thousand, three hundred twenty-one".