53405512 has 16 divisors (see below), whose sum is σ = 100277100. Its totient is φ = 26664960.

The previous prime is 53405509. The next prime is 53405533. The reversal of 53405512 is 21550435.

It can be written as a sum of positive squares in 2 ways, for example, as 52620516 + 784996 = 7254^2 + 886^2 .

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, 1812 + ... + 10492.

Almost surely, 2^53405512 is an apocalyptic number.

It is an amenable number.

53405512 is a deficient number, since it is larger than the sum of its proper divisors (46871588).

53405512 is a wasteful number, since it uses less digits than its factorization.

53405512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456 (or 9452 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 53405512 is about 7307.9074980462. The cubic root of 53405512 is about 376.5841418219.

Adding to 53405512 its reverse (21550435), we get a palindrome (74955947).

The spelling of 53405512 in words is "fifty-three million, four hundred five thousand, five hundred twelve".