53145512 has 64 divisors (see below), whose sum is σ = 118540800. Its totient is φ = 21864960.

The previous prime is 53145503. The next prime is 53145517. The reversal of 53145512 is 21554135.

It is not an unprimeable number, because it can be changed into a prime (53145517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181238 + ... + 181530.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^53145512 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 53145512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59270400).

53145512 is an abundant number, since it is smaller than the sum of its proper divisors (65395288).

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

53145512 is a wasteful number, since it uses less digits than its factorization.

53145512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 422 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 53145512 is about 7290.0968443499. The cubic root of 53145512 is about 375.9720252312.

Adding to 53145512 its reverse (21554135), we get a palindrome (74699647).

The spelling of 53145512 in words is "fifty-three million, one hundred forty-five thousand, five hundred twelve".