1055009231 has 4 divisors (see below), whose sum is σ = 1083523032. Its totient is φ = 1026495432.

The previous prime is 1055009227. The next prime is 1055009279. The reversal of 1055009231 is 1329005501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329005501 = 67 ⋅19835903.

It is a cyclic number.

It is not a de Polignac number, because 1055009231 - 2² = 1055009227 is a prime.

It is a super-2 number, since 2×1055009231² = 2226088954990422722, which 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 1055009231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055009281) 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, 14256845 + ... + 14256918.

It is an arithmetic number, because the mean of its divisors is an integer number (270880758).

Almost surely, 2^1055009231 is an apocalyptic number.

1055009231 is a deficient number, since it is larger than the sum of its proper divisors (28513801).

1055009231 is an equidigital number, since it uses as much as digits as its factorization.

1055009231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28513800.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 1055009231 is about 32480.9056370046. The cubic root of 1055009231 is about 1018.0100993796.

The spelling of 1055009231 in words is "one billion, fifty-five million, nine thousand, two hundred thirty-one".