55067818 has 16 divisors (see below), whose sum is σ = 89258400. Its totient is φ = 25329456.

The previous prime is 55067809. The next prime is 55067869. The reversal of 55067818 is 81876055.

It is a super-2 number, since 2×55067818² = 6064929158562248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4533 + ... + 11431.

It is an arithmetic number, because the mean of its divisors is an integer number (5578650).

Almost surely, 2^55067818 is an apocalyptic number.

55067818 is a deficient number, since it is larger than the sum of its proper divisors (34190582).

55067818 is a wasteful number, since it uses less digits than its factorization.

55067818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 55067818 is about 7420.7693671209. The cubic root of 55067818 is about 380.4514901352.

The spelling of 55067818 in words is "fifty-five million, sixty-seven thousand, eight hundred eighteen".