53173440 has 168 divisors, whose sum is σ = 188214000. Its totient is φ = 13768704.

The previous prime is 53173429. The next prime is 53173451. The reversal of 53173440 is 4437135.

53173440 is a `hidden beast` number, since 5 + 317 + 344 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (53173429) and next prime (53173451).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106311 + ... + 106809.

Almost surely, 2^53173440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53173440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94107000).

53173440 is an abundant number, since it is smaller than the sum of its proper divisors (135040560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53173440 is a wasteful number, since it uses less digits than its factorization.

53173440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53173440 is about 7292.0120680098. The cubic root of 53173440 is about 376.0378715437.

The spelling of 53173440 in words is "fifty-three million, one hundred seventy-three thousand, four hundred forty".