2053502391 has 4 divisors (see below), whose sum is σ = 2738003192. Its totient is φ = 1369001592.

The previous prime is 2053502371. The next prime is 2053502411. The reversal of 2053502391 is 1932053502.

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

It is an interprime number because it is at equal distance from previous prime (2053502371) and next prime (2053502411).

It is not a de Polignac number, because 2053502391 - 2⁵ = 2053502359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053502351) 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, 342250396 + ... + 342250401.

It is an arithmetic number, because the mean of its divisors is an integer number (684500798).

Almost surely, 2^2053502391 is an apocalyptic number.

2053502391 is a deficient number, since it is larger than the sum of its proper divisors (684500801).

2053502391 is an equidigital number, since it uses as much as digits as its factorization.

2053502391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684500800.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 2053502391 is about 45315.5866231477. The cubic root of 2053502391 is about 1271.0571294062.

Adding to 2053502391 its reverse (1932053502), we get a palindrome (3985555893).

The spelling of 2053502391 in words is "two billion, fifty-three million, five hundred two thousand, three hundred ninety-one".