53234915381 has 4 divisors (see below), whose sum is σ = 53313549612. Its totient is φ = 53156281152.

The previous prime is 53234915317. The next prime is 53234915423. The reversal of 53234915381 is 18351943235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18351943235 = 5 ⋅3670388647.

It can be written as a sum of positive squares in 2 ways, for example, as 39346292881 + 13888622500 = 198359^2 + 117850^2 .

It is a cyclic number.

It is not a de Polignac number, because 53234915381 - 2⁶ = 53234915317 is a prime.

It is a super-2 number, since 2×53234915381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53234915281) 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, 39316100 + ... + 39317453.

It is an arithmetic number, because the mean of its divisors is an integer number (13328387403).

Almost surely, 2^53234915381 is an apocalyptic number.

It is an amenable number.

53234915381 is a deficient number, since it is larger than the sum of its proper divisors (78634231).

53234915381 is an equidigital number, since it uses as much as digits as its factorization.

53234915381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78634230.

The product of its digits is 388800, while the sum is 44.

The spelling of 53234915381 in words is "fifty-three billion, two hundred thirty-four million, nine hundred fifteen thousand, three hundred eighty-one".