1053645 has 16 divisors (see below), whose sum is σ = 1775040. Its totient is φ = 532224.

The previous prime is 1053617. The next prime is 1053691. The reversal of 1053645 is 5463501.

It is not a de Polignac number, because 1053645 - 2⁶ = 1053581 is a prime.

It is a super-3 number, since 3×1053645³ = 3509168210718933375, which contains 333 as substring. Note that it is a super-d number also for d = 2.

1053645 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564 + ... + 2133.

It is an arithmetic number, because the mean of its divisors is an integer number (110940).

2^1053645 is an apocalyptic number.

1053645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1053645 is a deficient number, since it is larger than the sum of its proper divisors (721395).

1053645 is a wasteful number, since it uses less digits than its factorization.

1053645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1053645 is about 1026.4721136008. The cubic root of 1053645 is about 101.7571114284.

The spelling of 1053645 in words is "one million, fifty-three thousand, six hundred forty-five".