55587361 has 4 divisors (see below), whose sum is σ = 56011824. Its totient is φ = 55162900.

The previous prime is 55587359. The next prime is 55587419. The reversal of 55587361 is 16378555.

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 a cyclic number.

It is not a de Polignac number, because 55587361 - 2¹ = 55587359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55587661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212035 + ... + 212296.

It is an arithmetic number, because the mean of its divisors is an integer number (14002956).

Almost surely, 2^55587361 is an apocalyptic number.

It is an amenable number.

55587361 is a deficient number, since it is larger than the sum of its proper divisors (424463).

55587361 is a wasteful number, since it uses less digits than its factorization.

55587361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424462.

The product of its digits is 126000, while the sum is 40.

The square root of 55587361 is about 7455.6931937949. The cubic root of 55587361 is about 381.6442165836.

The spelling of 55587361 in words is "fifty-five million, five hundred eighty-seven thousand, three hundred sixty-one".