55535240 has 16 divisors (see below), whose sum is σ = 124954380. Its totient is φ = 22214080.

The previous prime is 55535239. The next prime is 55535257. The reversal of 55535240 is 4253555.

It is a happy number.

55535240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53787556 + 1747684 = 7334^2 + 1322^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694151 + ... + 694230.

Almost surely, 2^55535240 is an apocalyptic number.

It is an amenable number.

55535240 is an abundant number, since it is smaller than the sum of its proper divisors (69419140).

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

55535240 is a wasteful number, since it uses less digits than its factorization.

55535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388392 (or 1388388 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 55535240 is about 7452.1969914918. The cubic root of 55535240 is about 381.5248975023.

Adding to 55535240 its reverse (4253555), we get a palindrome (59788795).

The spelling of 55535240 in words is "fifty-five million, five hundred thirty-five thousand, two hundred forty".