55332040 has 16 divisors (see below), whose sum is σ = 124497180. Its totient is φ = 22132800.

The previous prime is 55332037. The next prime is 55332049. The reversal of 55332040 is 4023355.

It can be written as a sum of positive squares in 2 ways, for example, as 53377636 + 1954404 = 7306^2 + 1398^2 .

It is not an unprimeable number, because it can be changed into a prime (55332049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691611 + ... + 691690.

Almost surely, 2^55332040 is an apocalyptic number.

It is an amenable number.

55332040 is an abundant number, since it is smaller than the sum of its proper divisors (69165140).

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

55332040 is a wasteful number, since it uses less digits than its factorization.

55332040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383312 (or 1383308 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55332040 is about 7438.5509341538. The cubic root of 55332040 is about 381.0590034985.

Adding to 55332040 its reverse (4023355), we get a palindrome (59355395).

The spelling of 55332040 in words is "fifty-five million, three hundred thirty-two thousand, forty".