53358381 has 6 divisors (see below), whose sum is σ = 77073230. Its totient is φ = 35572248.

The previous prime is 53358377. The next prime is 53358397. The reversal of 53358381 is 18385335.

It can be written as a sum of positive squares in only one way, i.e., 33698025 + 19660356 = 5805^2 + 4434^2 .

It is not a de Polignac number, because 53358381 - 2² = 53358377 is a prime.

It is a super-2 number, since 2×53358381² = 5694233645882322, which 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 (53358311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2964346 + ... + 2964363.

Almost surely, 2^53358381 is an apocalyptic number.

It is an amenable number.

53358381 is a deficient number, since it is larger than the sum of its proper divisors (23714849).

53358381 is a wasteful number, since it uses less digits than its factorization.

53358381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928715 (or 5928712 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 53358381 is about 7304.6821286077. The cubic root of 53358381 is about 376.4733292219.

The spelling of 53358381 in words is "fifty-three million, three hundred fifty-eight thousand, three hundred eighty-one".