53491931 has 2 divisors, whose sum is σ = 53491932. Its totient is φ = 53491930.

The previous prime is 53491913. The next prime is 53491943. The reversal of 53491931 is 13919435.

53491931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (53491913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53491931 - 2¹⁰ = 53490907 is a prime.

It is a super-3 number, since 3×53491931³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 53491891 and 53491900.

It is not a weakly prime, because it can be changed into another prime (53491331) 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 as a sum of consecutive naturals, namely, 26745965 + 26745966.

It is an arithmetic number, because the mean of its divisors is an integer number (26745966).

Almost surely, 2^53491931 is an apocalyptic number.

53491931 is a deficient number, since it is larger than the sum of its proper divisors (1).

53491931 is an equidigital number, since it uses as much as digits as its factorization.

53491931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 53491931 is about 7313.8178128799. The cubic root of 53491931 is about 376.7871576132.

The spelling of 53491931 in words is "fifty-three million, four hundred ninety-one thousand, nine hundred thirty-one".