53135620 has 24 divisors (see below), whose sum is σ = 111722688. Its totient is φ = 21228000.

The previous prime is 53135603. The next prime is 53135629. The reversal of 53135620 is 2653135.

It is a happy number.

It is a super-2 number, since 2×53135620² = 5646788225568800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53135629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28105 + ... + 29935.

It is an arithmetic number, because the mean of its divisors is an integer number (4655112).

Almost surely, 2^53135620 is an apocalyptic number.

It is an amenable number.

53135620 is an abundant number, since it is smaller than the sum of its proper divisors (58587068).

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

53135620 is a wasteful number, since it uses less digits than its factorization.

53135620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53135620 is about 7289.4183581408. The cubic root of 53135620 is about 375.9486971651.

Adding to 53135620 its reverse (2653135), we get a palindrome (55788755).

The spelling of 53135620 in words is "fifty-three million, one hundred thirty-five thousand, six hundred twenty".