53405012 has 12 divisors (see below), whose sum is σ = 94991316. Its totient is φ = 26264640.

The previous prime is 53405003. The next prime is 53405039. The reversal of 53405012 is 21050435.

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 25060036 = 5324^2 + 5006^2 .

It is a congruent number.

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, 109193 + ... + 109680.

It is an arithmetic number, because the mean of its divisors is an integer number (7915943).

Almost surely, 2^53405012 is an apocalyptic number.

It is an amenable number.

53405012 is a deficient number, since it is larger than the sum of its proper divisors (41586304).

53405012 is a wasteful number, since it uses less digits than its factorization.

53405012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218938 (or 218936 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 53405012 is about 7307.8732884472. The cubic root of 53405012 is about 376.5829665833.

Adding to 53405012 its reverse (21050435), we get a palindrome (74455447).

The spelling of 53405012 in words is "fifty-three million, four hundred five thousand, twelve".