53154440 has 16 divisors (see below), whose sum is σ = 119597580. Its totient is φ = 21261760.

The previous prime is 53154433. The next prime is 53154443. The reversal of 53154440 is 4445135.

It can be written as a sum of positive squares in 2 ways, for example, as 53085796 + 68644 = 7286^2 + 262^2 .

It is not an unprimeable number, because it can be changed into a prime (53154443) 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, 664391 + ... + 664470.

Almost surely, 2^53154440 is an apocalyptic number.

It is an amenable number.

53154440 is an abundant number, since it is smaller than the sum of its proper divisors (66443140).

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

53154440 is a wasteful number, since it uses less digits than its factorization.

53154440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328872 (or 1328868 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 53154440 is about 7290.7091561795. The cubic root of 53154440 is about 375.9930774340.

Adding to 53154440 its reverse (4445135), we get a palindrome (57599575).

The spelling of 53154440 in words is "fifty-three million, one hundred fifty-four thousand, four hundred forty".