53440130 has 8 divisors (see below), whose sum is σ = 96192252. Its totient is φ = 21376048.

The previous prime is 53440111. The next prime is 53440133. The reversal of 53440130 is 3104435.

It can be written as a sum of positive squares in 2 ways, for example, as 46881409 + 6558721 = 6847^2 + 2561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53440133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2671997 + ... + 2672016.

Almost surely, 2^53440130 is an apocalyptic number.

53440130 is a deficient number, since it is larger than the sum of its proper divisors (42752122).

53440130 is a wasteful number, since it uses less digits than its factorization.

53440130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5344020.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 53440130 is about 7310.2756445978. The cubic root of 53440130 is about 376.6654928131.

Adding to 53440130 its reverse (3104435), we get a palindrome (56544565).

The spelling of 53440130 in words is "fifty-three million, four hundred forty thousand, one hundred thirty".