391053 has 16 divisors (see below), whose sum is σ = 578816. Its totient is φ = 233280.

The previous prime is 391049. The next prime is 391057. The reversal of 391053 is 350193.

391053 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (391049) and next prime (391057).

It is not a de Polignac number, because 391053 - 2² = 391049 is a prime.

It is a Duffinian number.

391053 is strictly pandigital in base 7.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391057) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1308 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (36176).

2³⁹¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

391053 is a deficient number, since it is larger than the sum of its proper divisors (187763).

391053 is a wasteful number, since it uses less digits than its factorization.

391053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 391053 is about 625.3423062611. The cubic root of 391053 is about 73.1271319416.

The spelling of 391053 in words is "three hundred ninety-one thousand, fifty-three".