55201318 has 4 divisors (see below), whose sum is σ = 82801980. Its totient is φ = 27600658.

The previous prime is 55201309. The next prime is 55201331. The reversal of 55201318 is 81310255.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 55201292 and 55201301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13800328 + ... + 13800331.

It is an arithmetic number, because the mean of its divisors is an integer number (20700495).

Almost surely, 2^55201318 is an apocalyptic number.

55201318 is a deficient number, since it is larger than the sum of its proper divisors (27600662).

55201318 is a wasteful number, since it uses less digits than its factorization.

55201318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27600661.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 55201318 is about 7429.7589462916. The cubic root of 55201318 is about 380.7586827789.

The spelling of 55201318 in words is "fifty-five million, two hundred one thousand, three hundred eighteen".