53381408 has 24 divisors (see below), whose sum is σ = 105316848. Its totient is φ = 26634304.

The previous prime is 53381389. The next prime is 53381437. The reversal of 53381408 is 80418335.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16535 + ... + 19497.

It is an arithmetic number, because the mean of its divisors is an integer number (4388202).

Almost surely, 2^53381408 is an apocalyptic number.

It is an amenable number.

53381408 is a deficient number, since it is larger than the sum of its proper divisors (51935440).

53381408 is a wasteful number, since it uses less digits than its factorization.

53381408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536 (or 3528 counting only the distinct ones).

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

The square root of 53381408 is about 7306.2581394309. The cubic root of 53381408 is about 376.5274775702.

The spelling of 53381408 in words is "fifty-three million, three hundred eighty-one thousand, four hundred eight".