55987204 has 96 divisors (see below), whose sum is σ = 127635200. Its totient is φ = 21337344.

The previous prime is 55987201. The next prime is 55987207. The reversal of 55987204 is 40278955.

It is an interprime number because it is at equal distance from previous prime (55987201) and next prime (55987207).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55987201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766912 + ... + 766984.

Almost surely, 2^55987204 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 55987204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63817600).

55987204 is an abundant number, since it is smaller than the sum of its proper divisors (71647996).

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

55987204 is a wasteful number, since it uses less digits than its factorization.

55987204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 55987204 is about 7482.4597559893. The cubic root of 55987204 is about 382.5570940163.

The spelling of 55987204 in words is "fifty-five million, nine hundred eighty-seven thousand, two hundred four".