55505004 has 48 divisors (see below), whose sum is σ = 140743680. Its totient is φ = 16960320.

The previous prime is 55504997. The next prime is 55505029. The reversal of 55505004 is 40050555.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3142 + ... + 10994.

It is an arithmetic number, because the mean of its divisors is an integer number (2932160).

Almost surely, 2^55505004 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 55505004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70371840).

55505004 is an abundant number, since it is smaller than the sum of its proper divisors (85238676).

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

55505004 is a wasteful number, since it uses less digits than its factorization.

55505004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7910 (or 7908 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 55505004 is about 7450.1680517959. The cubic root of 55505004 is about 381.4556448922.

Adding to 55505004 its reverse (40050555), we get a palindrome (95555559).

The spelling of 55505004 in words is "fifty-five million, five hundred five thousand, four".