1055471120521 has 4 divisors (see below), whose sum is σ = 1056410989072. Its totient is φ = 1054531251972.

The previous prime is 1055471120489. The next prime is 1055471120563. The reversal of 1055471120521 is 1250211745501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1055471120521 - 2⁵ = 1055471120489 is a prime.

It is a super-2 number, since 2×1055471120521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055471820521) 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, 469932591 + ... + 469934836.

It is an arithmetic number, because the mean of its divisors is an integer number (264102747268).

Almost surely, 2^{1055471120521} is an apocalyptic number.

It is an amenable number.

1055471120521 is a deficient number, since it is larger than the sum of its proper divisors (939868551).

1055471120521 is an equidigital number, since it uses as much as digits as its factorization.

1055471120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939868550.

The product of its (nonzero) digits is 14000, while the sum is 34.

The spelling of 1055471120521 in words is "one trillion, fifty-five billion, four hundred seventy-one million, one hundred twenty thousand, five hundred twenty-one".