53406823 has 2 divisors, whose sum is σ = 53406824. Its totient is φ = 53406822.

The previous prime is 53406779. The next prime is 53406827. The reversal of 53406823 is 32860435.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53406823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53406827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26703411 + 26703412.

It is an arithmetic number, because the mean of its divisors is an integer number (26703412).

Almost surely, 2^53406823 is an apocalyptic number.

53406823 is a deficient number, since it is larger than the sum of its proper divisors (1).

53406823 is an equidigital number, since it uses as much as digits as its factorization.

53406823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 53406823 is about 7307.9971948544. The cubic root of 53406823 is about 376.5872232627.

The spelling of 53406823 in words is "fifty-three million, four hundred six thousand, eight hundred twenty-three".