53145632 has 24 divisors (see below), whose sum is σ = 108240300. Its totient is φ = 25656064.

The previous prime is 53145629. The next prime is 53145649. The reversal of 53145632 is 23654135.

It can be written as a sum of positive squares in 2 ways, for example, as 48497296 + 4648336 = 6964^2 + 2156^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 53145595 and 53145604.

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, 27707 + ... + 29562.

Almost surely, 2^53145632 is an apocalyptic number.

It is an amenable number.

53145632 is an abundant number, since it is smaller than the sum of its proper divisors (55094668).

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

53145632 is a wasteful number, since it uses less digits than its factorization.

53145632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57308 (or 57300 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 53145632 is about 7290.1050746886. The cubic root of 53145632 is about 375.9723082066.

Adding to 53145632 its reverse (23654135), we get a palindrome (76799767).

The spelling of 53145632 in words is "fifty-three million, one hundred forty-five thousand, six hundred thirty-two".