55066004 has 18 divisors (see below), whose sum is σ = 112099050. Its totient is φ = 23599632.

The previous prime is 55066001. The next prime is 55066007. The reversal of 55066004 is 40066055.

It is an interprime number because it is at equal distance from previous prime (55066001) and next prime (55066007).

It can be written as a sum of positive squares in only one way, i.e., 55056400 + 9604 = 7420^2 + 98^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55066001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140279 + ... + 140670.

It is an arithmetic number, because the mean of its divisors is an integer number (6227725).

Almost surely, 2^55066004 is an apocalyptic number.

It is an amenable number.

55066004 is an abundant number, since it is smaller than the sum of its proper divisors (57033046).

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

55066004 is a wasteful number, since it uses less digits than its factorization.

55066004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280967 (or 280958 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 55066004 is about 7420.6471415908. The cubic root of 55066004 is about 380.4473125798.

The spelling of 55066004 in words is "fifty-five million, sixty-six thousand, four".