55604020 has 24 divisors (see below), whose sum is σ = 120796200. Its totient is φ = 21474432.

The previous prime is 55604011. The next prime is 55604033. The reversal of 55604020 is 2040655.

It can be written as a sum of positive squares in 4 ways, for example, as 1493284 + 54110736 = 1222^2 + 7356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55603982 and 55604000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47355 + ... + 48514.

It is an arithmetic number, because the mean of its divisors is an integer number (5033175).

Almost surely, 2^55604020 is an apocalyptic number.

It is an amenable number.

55604020 is an abundant number, since it is smaller than the sum of its proper divisors (65192180).

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

55604020 is a wasteful number, since it uses less digits than its factorization.

55604020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95907 (or 95905 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55604020 is about 7456.8103100454. The cubic root of 55604020 is about 381.6823378152.

Adding to 55604020 its reverse (2040655), we get a palindrome (57644675).

The spelling of 55604020 in words is "fifty-five million, six hundred four thousand, twenty".