53417520 has 180 divisors, whose sum is σ = 194697360. Its totient is φ = 13118976.

The previous prime is 53417491. The next prime is 53417537. The reversal of 53417520 is 2571435.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121461 + ... + 121899.

It is an arithmetic number, because the mean of its divisors is an integer number (1081652).

Almost surely, 2^53417520 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 53417520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97348680).

53417520 is an abundant number, since it is smaller than the sum of its proper divisors (141279840).

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

53417520 is a wasteful number, since it uses less digits than its factorization.

53417520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 53417520 is about 7308.7290276764. The cubic root of 53417520 is about 376.6123641491.

Adding to 53417520 its reverse (2571435), we get a palindrome (55988955).

The spelling of 53417520 in words is "fifty-three million, four hundred seventeen thousand, five hundred twenty".