55530361 has 4 divisors (see below), whose sum is σ = 55930000. Its totient is φ = 55130724.

The previous prime is 55530341. The next prime is 55530367. The reversal of 55530361 is 16303555.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16303555 = 5 ⋅3260711.

It is a cyclic number.

It is not a de Polignac number, because 55530361 - 2²⁵ = 21975929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55530367) 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, 199611 + ... + 199888.

It is an arithmetic number, because the mean of its divisors is an integer number (13982500).

Almost surely, 2^55530361 is an apocalyptic number.

It is an amenable number.

55530361 is a deficient number, since it is larger than the sum of its proper divisors (399639).

55530361 is a wasteful number, since it uses less digits than its factorization.

55530361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399638.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 55530361 is about 7451.8696311731. The cubic root of 55530361 is about 381.5137243296.

The spelling of 55530361 in words is "fifty-five million, five hundred thirty thousand, three hundred sixty-one".