55053340 has 12 divisors (see below), whose sum is σ = 115612056. Its totient is φ = 22021328.

The previous prime is 55053337. The next prime is 55053347. The reversal of 55053340 is 4335055.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55053347) 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, 1376314 + ... + 1376353.

It is an arithmetic number, because the mean of its divisors is an integer number (9634338).

Almost surely, 2^55053340 is an apocalyptic number.

It is an amenable number.

55053340 is an abundant number, since it is smaller than the sum of its proper divisors (60558716).

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

55053340 is a wasteful number, since it uses less digits than its factorization.

55053340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752676 (or 2752674 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 55053340 is about 7419.7937976739. The cubic root of 55053340 is about 380.4181454361.

Adding to 55053340 its reverse (4335055), we get a palindrome (59388395).

The spelling of 55053340 in words is "fifty-five million, fifty-three thousand, three hundred forty".