55105004 has 6 divisors (see below), whose sum is σ = 96433764. Its totient is φ = 27552500.

The previous prime is 55105003. The next prime is 55105027. The reversal of 55105004 is 40050155.

It is a super-2 number, since 2×55105004² = 6073122931680032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55105003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6888122 + ... + 6888129.

It is an arithmetic number, because the mean of its divisors is an integer number (16072294).

Almost surely, 2^55105004 is an apocalyptic number.

It is an amenable number.

55105004 is a deficient number, since it is larger than the sum of its proper divisors (41328760).

55105004 is a wasteful number, since it uses less digits than its factorization.

55105004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13776255 (or 13776253 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 55105004 is about 7423.2744796350. The cubic root of 55105004 is about 380.5371075087.

Adding to 55105004 its reverse (40050155), we get a palindrome (95155159).

The spelling of 55105004 in words is "fifty-five million, one hundred five thousand, four".