1055403215393 has 4 divisors (see below), whose sum is σ = 1055406740868. Its totient is φ = 1055399689920.

The previous prime is 1055403215359. The next prime is 1055403215497. The reversal of 1055403215393 is 3935123045501.

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 541625346304 + 513777869089 = 735952^2 + 716783^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055403215393 - 2²⁴ = 1055386438177 is a prime.

It is a super-2 number, since 2×1055403215393² (a number of 25 digits) contains 22 as substring.

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 1055403215393.

It is not an unprimeable number, because it can be changed into a prime (1055403215693) 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, 1267268 + ... + 1927893.

It is an arithmetic number, because the mean of its divisors is an integer number (263851685217).

Almost surely, 2^{1055403215393} is an apocalyptic number.

It is an amenable number.

1055403215393 is a deficient number, since it is larger than the sum of its proper divisors (3525475).

1055403215393 is an equidigital number, since it uses as much as digits as its factorization.

1055403215393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525474.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 1055403215393 in words is "one trillion, fifty-five billion, four hundred three million, two hundred fifteen thousand, three hundred ninety-three".