1055514547561 has 4 divisors (see below), whose sum is σ = 1117603638612. Its totient is φ = 993425456512.

The previous prime is 1055514547523. The next prime is 1055514547679. The reversal of 1055514547561 is 1657454155501.

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 890947210000 + 164567337561 = 943900^2 + 405669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055514547561 - 2²⁷ = 1055380329833 is a prime.

It is a super-2 number, since 2×1055514547561² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055514047561) 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, 31044545500 + ... + 31044545533.

It is an arithmetic number, because the mean of its divisors is an integer number (279400909653).

Almost surely, 2^{1055514547561} is an apocalyptic number.

It is an amenable number.

1055514547561 is a deficient number, since it is larger than the sum of its proper divisors (62089091051).

1055514547561 is an equidigital number, since it uses as much as digits as its factorization.

1055514547561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62089091050.

The product of its (nonzero) digits is 2100000, while the sum is 49.

The spelling of 1055514547561 in words is "one trillion, fifty-five billion, five hundred fourteen million, five hundred forty-seven thousand, five hundred sixty-one".