53406040 has 32 divisors (see below), whose sum is σ = 121121280. Its totient is φ = 21192192.

The previous prime is 53406013. The next prime is 53406071. The reversal of 53406040 is 4060435.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 10336.

It is an arithmetic number, because the mean of its divisors is an integer number (3785040).

Almost surely, 2^53406040 is an apocalyptic number.

It is an amenable number.

53406040 is an abundant number, since it is smaller than the sum of its proper divisors (67715240).

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

53406040 is a wasteful number, since it uses less digits than its factorization.

53406040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651 (or 10647 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 53406040 is about 7307.9436232089. The cubic root of 53406040 is about 376.5853828659.

Adding to 53406040 its reverse (4060435), we get a palindrome (57466475).

The spelling of 53406040 in words is "fifty-three million, four hundred six thousand, forty".