55667238 has 16 divisors (see below), whose sum is σ = 121455936. Its totient is φ = 16868840.

The previous prime is 55667219. The next prime is 55667239. The reversal of 55667238 is 83276655.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55667238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421656 + ... + 421787.

It is an arithmetic number, because the mean of its divisors is an integer number (7590996).

Almost surely, 2^55667238 is an apocalyptic number.

55667238 is an abundant number, since it is smaller than the sum of its proper divisors (65788698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55667238 is a wasteful number, since it uses less digits than its factorization.

55667238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843459.

The product of its digits is 302400, while the sum is 42.

The square root of 55667238 is about 7461.0480497045. The cubic root of 55667238 is about 381.8269320093.

The spelling of 55667238 in words is "fifty-five million, six hundred sixty-seven thousand, two hundred thirty-eight".