53317500 has 60 divisors (see below), whose sum is σ = 155481480. Its totient is φ = 14216000.

The previous prime is 53317499. The next prime is 53317501. The reversal of 53317500 is 571335.

It is an interprime number because it is at equal distance from previous prime (53317499) and next prime (53317501).

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53317501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3946 + ... + 11054.

It is an arithmetic number, because the mean of its divisors is an integer number (2591358).

Almost surely, 2^53317500 is an apocalyptic number.

53317500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53317500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77740740).

53317500 is an abundant number, since it is smaller than the sum of its proper divisors (102163980).

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

53317500 is a wasteful number, since it uses less digits than its factorization.

53317500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136 (or 7119 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 24.

The square root of 53317500 is about 7301.8833187062. The cubic root of 53317500 is about 376.3771585229.

Adding to 53317500 its reverse (571335), we get a palindrome (53888835).

The spelling of 53317500 in words is "fifty-three million, three hundred seventeen thousand, five hundred".