53380440 has 48 divisors (see below), whose sum is σ = 173487600. Its totient is φ = 14234688.

The previous prime is 53380423. The next prime is 53380451. The reversal of 53380440 is 4408335.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73780 + ... + 74499.

It is an arithmetic number, because the mean of its divisors is an integer number (3614325).

Almost surely, 2^53380440 is an apocalyptic number.

It is an amenable number.

53380440 is an abundant number, since it is smaller than the sum of its proper divisors (120107160).

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

53380440 is a wasteful number, since it uses less digits than its factorization.

53380440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148296 (or 148289 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 53380440 is about 7306.1918945508. The cubic root of 53380440 is about 376.5252016167.

Adding to 53380440 its reverse (4408335), we get a palindrome (57788775).

The spelling of 53380440 in words is "fifty-three million, three hundred eighty thousand, four hundred forty".