1053321345 has 24 divisors (see below), whose sum is σ = 1827199296. Its totient is φ = 561327648.

The previous prime is 1053321329. The next prime is 1053321361. The reversal of 1053321345 is 5431233501.

It is an interprime number because it is at equal distance from previous prime (1053321329) and next prime (1053321361).

It is not a de Polignac number, because 1053321345 - 2⁴ = 1053321329 is a prime.

It is a super-2 number, since 2×1053321345² = 2218971711665218050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52954 + ... + 70076.

It is an arithmetic number, because the mean of its divisors is an integer number (76133304).

Almost surely, 2^1053321345 is an apocalyptic number.

1053321345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1053321345 is a deficient number, since it is larger than the sum of its proper divisors (773877951).

1053321345 is a wasteful number, since it uses less digits than its factorization.

1053321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18501 (or 18498 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1053321345 is about 32454.9124941048. The cubic root of 1053321345 is about 1017.4669122971.

Adding to 1053321345 its reverse (5431233501), we get a palindrome (6484554846).

It can be divided in two parts, 10533 and 21345, that added together give a triangular number (31878 = T₂₅₂).

The spelling of 1053321345 in words is "one billion, fifty-three million, three hundred twenty-one thousand, three hundred forty-five".