55202018 has 4 divisors (see below), whose sum is σ = 82803030. Its totient is φ = 27601008.

The previous prime is 55201997. The next prime is 55202023. The reversal of 55202018 is 81020255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81020255 = 5 ⋅16204051.

It can be written as a sum of positive squares in only one way, i.e., 54361129 + 840889 = 7373^2 + 917^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55201984 and 55202002.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13800503 + ... + 13800506.

Almost surely, 2^55202018 is an apocalyptic number.

55202018 is a deficient number, since it is larger than the sum of its proper divisors (27601012).

55202018 is a wasteful number, since it uses less digits than its factorization.

55202018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27601011.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 55202018 is about 7429.8060539963. The cubic root of 55202018 is about 380.7602922208.

The spelling of 55202018 in words is "fifty-five million, two hundred two thousand, eighteen".