1055545663 has 4 divisors (see below), whose sum is σ = 1055618200. Its totient is φ = 1055473128.

The previous prime is 1055545661. The next prime is 1055545717. The reversal of 1055545663 is 3665455501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1055545663 - 2¹ = 1055545661 is a prime.

It is a super-2 number, since 2×1055545663² = 2228353293356219138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055545661) 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, 6045 + ... + 46342.

It is an arithmetic number, because the mean of its divisors is an integer number (263904550).

Almost surely, 2^1055545663 is an apocalyptic number.

1055545663 is a deficient number, since it is larger than the sum of its proper divisors (72537).

1055545663 is an equidigital number, since it uses as much as digits as its factorization.

1055545663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72536.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 1055545663 is about 32489.1622391221. The cubic root of 1055545663 is about 1018.1826099283.

The spelling of 1055545663 in words is "one billion, fifty-five million, five hundred forty-five thousand, six hundred sixty-three".