53408381 has 8 divisors (see below), whose sum is σ = 59372544. Its totient is φ = 47709360.

The previous prime is 53408371. The next prime is 53408419. The reversal of 53408381 is 18380435.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53408381 - 2⁶ = 53408317 is a prime.

It is a super-2 number, since 2×53408381² = 5704910322082322, 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 (53408351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65861 + ... + 66666.

It is an arithmetic number, because the mean of its divisors is an integer number (7421568).

Almost surely, 2^53408381 is an apocalyptic number.

It is an amenable number.

53408381 is a deficient number, since it is larger than the sum of its proper divisors (5964163).

53408381 is a wasteful number, since it uses less digits than its factorization.

53408381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132571.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 53408381 is about 7308.1037896297. The cubic root of 53408381 is about 376.5908851992.

The spelling of 53408381 in words is "fifty-three million, four hundred eight thousand, three hundred eighty-one".