55144004 has 12 divisors (see below), whose sum is σ = 101581200. Its totient is φ = 26120808.

The previous prime is 55143989. The next prime is 55144013. The reversal of 55144004 is 40044155.

It is a super-2 number, since 2×55144004² = 6081722354304032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362714 + ... + 362865.

It is an arithmetic number, because the mean of its divisors is an integer number (8465100).

Almost surely, 2^55144004 is an apocalyptic number.

It is an amenable number.

55144004 is a deficient number, since it is larger than the sum of its proper divisors (46437196).

55144004 is a wasteful number, since it uses less digits than its factorization.

55144004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725602 (or 725600 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 55144004 is about 7425.9008881078. The cubic root of 55144004 is about 380.6268600799.

Adding to 55144004 its reverse (40044155), we get a palindrome (95188159).

The spelling of 55144004 in words is "fifty-five million, one hundred forty-four thousand, four".