53669381 has 8 divisors (see below), whose sum is σ = 54921024. Its totient is φ = 52431840.

The previous prime is 53669359. The next prime is 53669387. The reversal of 53669381 is 18396635.

53669381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53669381 is a prime.

It is a super-2 number, since 2×53669381² = 5760804913846322, 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 (53669387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4376 + ... + 11246.

It is an arithmetic number, because the mean of its divisors is an integer number (6865128).

Almost surely, 2^53669381 is an apocalyptic number.

It is an amenable number.

53669381 is a deficient number, since it is larger than the sum of its proper divisors (1251643).

53669381 is a wasteful number, since it uses less digits than its factorization.

53669381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7051.

The product of its digits is 116640, while the sum is 41.

The square root of 53669381 is about 7325.9389159343. The cubic root of 53669381 is about 377.2033392863.

The spelling of 53669381 in words is "fifty-three million, six hundred sixty-nine thousand, three hundred eighty-one".