55312504 has 32 divisors (see below), whose sum is σ = 112860720. Its totient is φ = 25261056.

The previous prime is 55312501. The next prime is 55312507. The reversal of 55312504 is 40521355.

It is an interprime number because it is at equal distance from previous prime (55312501) and next prime (55312507).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 12829.

Almost surely, 2^55312504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55312504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56430360).

55312504 is an abundant number, since it is smaller than the sum of its proper divisors (57548216).

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

55312504 is a wasteful number, since it uses less digits than its factorization.

55312504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599 (or 5595 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55312504 is about 7437.2376592388. The cubic root of 55312504 is about 381.0141515767.

Adding to 55312504 its reverse (40521355), we get a palindrome (95833859).

The spelling of 55312504 in words is "fifty-five million, three hundred twelve thousand, five hundred four".