55604361 has 4 divisors (see below), whose sum is σ = 74139152. Its totient is φ = 37069572.

The previous prime is 55604357. The next prime is 55604371. The reversal of 55604361 is 16340655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55604361 - 2² = 55604357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55604371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9267391 + ... + 9267396.

It is an arithmetic number, because the mean of its divisors is an integer number (18534788).

Almost surely, 2^55604361 is an apocalyptic number.

It is an amenable number.

55604361 is a deficient number, since it is larger than the sum of its proper divisors (18534791).

55604361 is a wasteful number, since it uses less digits than its factorization.

55604361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18534790.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55604361 is about 7456.8331750147. The cubic root of 55604361 is about 381.6831180550.

The spelling of 55604361 in words is "fifty-five million, six hundred four thousand, three hundred sixty-one".