55667388 has 48 divisors (see below), whose sum is σ = 152466944. Its totient is φ = 15474240.

The previous prime is 55667387. The next prime is 55667393. The reversal of 55667388 is 88376655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5848 + ... + 12063.

Almost surely, 2^55667388 is an apocalyptic number.

It is an amenable number.

55667388 is an abundant number, since it is smaller than the sum of its proper divisors (96799556).

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

55667388 is a wasteful number, since it uses less digits than its factorization.

55667388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17962 (or 17960 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 55667388 is about 7461.0581019048. The cubic root of 55667388 is about 381.8272749638.

The spelling of 55667388 in words is "fifty-five million, six hundred sixty-seven thousand, three hundred eighty-eight".