55015004 has 48 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 23780160.

The previous prime is 55014991. The next prime is 55015019. The reversal of 55015004 is 40051055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76157 + ... + 76875.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^55015004 is an apocalyptic number.

It is an amenable number.

55015004 is an abundant number, since it is smaller than the sum of its proper divisors (55300516).

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

55015004 is a wasteful number, since it uses less digits than its factorization.

55015004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 816 counting only the distinct ones).

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

The square root of 55015004 is about 7417.2099875897. The cubic root of 55015004 is about 380.3298244464.

Adding to 55015004 its reverse (40051055), we get a palindrome (95066059).

The spelling of 55015004 in words is "fifty-five million, fifteen thousand, four".