1055630845 has 4 divisors (see below), whose sum is σ = 1266757020. Its totient is φ = 844504672.

The previous prime is 1055630843. The next prime is 1055630867. The reversal of 1055630845 is 5480365501.

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 821510244 + 234120601 = 28662^2 + 15301^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055630845 - 2¹ = 1055630843 is a prime.

It is a super-2 number, since 2×1055630845² = 2228712961830828050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055630843) 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, 105563080 + ... + 105563089.

It is an arithmetic number, because the mean of its divisors is an integer number (316689255).

Almost surely, 2^1055630845 is an apocalyptic number.

It is an amenable number.

1055630845 is a deficient number, since it is larger than the sum of its proper divisors (211126175).

1055630845 is an equidigital number, since it uses as much as digits as its factorization.

1055630845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211126174.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1055630845 is about 32490.4731421381. The cubic root of 1055630845 is about 1018.2099981318.

The spelling of 1055630845 in words is "one billion, fifty-five million, six hundred thirty thousand, eight hundred forty-five".