55003240 has 32 divisors (see below), whose sum is σ = 123989760. Its totient is φ = 21960000.

The previous prime is 55003231. The next prime is 55003261. The reversal of 55003240 is 4230055.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29125 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (3874680).

Almost surely, 2^55003240 is an apocalyptic number.

It is an amenable number.

55003240 is an abundant number, since it is smaller than the sum of its proper divisors (68986520).

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

55003240 is a wasteful number, since it uses less digits than its factorization.

55003240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 55003240 is about 7416.4169246342. The cubic root of 55003240 is about 380.3027135452.

Adding to 55003240 its reverse (4230055), we get a palindrome (59233295).

The spelling of 55003240 in words is "fifty-five million, three thousand, two hundred forty".