53515000 has 160 divisors (see below), whose sum is σ = 157449600. Its totient is φ = 16560000.

The previous prime is 53514973. The next prime is 53515009. The reversal of 53515000 is 51535.

53515000 = T₆₉ + T₇₀ + ... + T₆₈₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53515009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 384931 + ... + 385069.

It is an arithmetic number, because the mean of its divisors is an integer number (984060).

Almost surely, 2^53515000 is an apocalyptic number.

53515000 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 53515000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78724800).

53515000 is an abundant number, since it is smaller than the sum of its proper divisors (103934600).

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

53515000 is a wasteful number, since it uses less digits than its factorization.

53515000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 53515000 is about 7315.3947261922. The cubic root of 53515000 is about 376.8413144025.

Adding to 53515000 its reverse (51535), we get a palindrome (53566535).

The spelling of 53515000 in words is "fifty-three million, five hundred fifteen thousand".