53356399 has 4 divisors (see below), whose sum is σ = 53402760. Its totient is φ = 53310040.

The previous prime is 53356397. The next prime is 53356411. The reversal of 53356399 is 99365335.

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

It is a cyclic number.

It is not a de Polignac number, because 53356399 - 2¹ = 53356397 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 (53356397) 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, 21409 + ... + 23770.

It is an arithmetic number, because the mean of its divisors is an integer number (13350690).

Almost surely, 2^53356399 is an apocalyptic number.

53356399 is a deficient number, since it is larger than the sum of its proper divisors (46361).

53356399 is a wasteful number, since it uses less digits than its factorization.

53356399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46360.

The product of its digits is 328050, while the sum is 43.

The square root of 53356399 is about 7304.5464609379. The cubic root of 53356399 is about 376.4686677900.

The spelling of 53356399 in words is "fifty-three million, three hundred fifty-six thousand, three hundred ninety-nine".