53061520 has 20 divisors (see below), whose sum is σ = 123368220. Its totient is φ = 21224576.

The previous prime is 53061517. The next prime is 53061563. The reversal of 53061520 is 2516035.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12306064 + 40755456 = 3508^2 + 6384^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 53061491 and 53061500.

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, 331555 + ... + 331714.

It is an arithmetic number, because the mean of its divisors is an integer number (6168411).

Almost surely, 2^53061520 is an apocalyptic number.

It is an amenable number.

53061520 is an abundant number, since it is smaller than the sum of its proper divisors (70306700).

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

53061520 is a wasteful number, since it uses less digits than its factorization.

53061520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663282 (or 663276 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 53061520 is about 7284.3338748303. Note that the first 3 decimals coincide. The cubic root of 53061520 is about 375.7738567715.

Adding to 53061520 its reverse (2516035), we get a palindrome (55577555).

The spelling of 53061520 in words is "fifty-three million, sixty-one thousand, five hundred twenty".