53430440 has 32 divisors (see below), whose sum is σ = 137393280. Its totient is φ = 18318912.

The previous prime is 53430437. The next prime is 53430469. The reversal of 53430440 is 4403435.

It is a happy 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, 95132 + ... + 95691.

It is an arithmetic number, because the mean of its divisors is an integer number (4293540).

Almost surely, 2^53430440 is an apocalyptic number.

It is an amenable number.

53430440 is an abundant number, since it is smaller than the sum of its proper divisors (83962840).

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

53430440 is a wasteful number, since it uses less digits than its factorization.

53430440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190841 (or 190837 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 53430440 is about 7309.6128488450. The cubic root of 53430440 is about 376.6427252210.

Adding to 53430440 its reverse (4403435), we get a palindrome (57833875).

The spelling of 53430440 in words is "fifty-three million, four hundred thirty thousand, four hundred forty".