1053391 has 4 divisors (see below), whose sum is σ = 1057032. Its totient is φ = 1049752.

The previous prime is 1053383. The next prime is 1053401. The reversal of 1053391 is 1933501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1053391 - 2³ = 1053383 is a prime.

It is a super-2 number, since 2×1053391² = 2219265197762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053301) 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, 1345 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (264258).

2^1053391 is an apocalyptic number.

1053391 is a deficient number, since it is larger than the sum of its proper divisors (3641).

1053391 is an equidigital number, since it uses as much as digits as its factorization.

1053391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 1053391 is about 1026.3483813988. The cubic root of 1053391 is about 101.7489339798.

Adding to 1053391 its reverse (1933501), we get a palindrome (2986892).

It can be divided in two parts, 1053 and 391, that added together give a square (1444 = 38²).

The spelling of 1053391 in words is "one million, fifty-three thousand, three hundred ninety-one".