55015444 has 12 divisors (see below), whose sum is σ = 105029568. Its totient is φ = 25007000.

The previous prime is 55015423. The next prime is 55015453. The reversal of 55015444 is 44451055.

It is a congruent number.

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, 625132 + ... + 625219.

It is an arithmetic number, because the mean of its divisors is an integer number (8752464).

Almost surely, 2^55015444 is an apocalyptic number.

It is an amenable number.

55015444 is a deficient number, since it is larger than the sum of its proper divisors (50014124).

55015444 is a wasteful number, since it uses less digits than its factorization.

55015444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250366 (or 1250364 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 55015444 is about 7417.2396482789. The cubic root of 55015444 is about 380.3308383799.

Adding to 55015444 its reverse (44451055), we get a palindrome (99466499).

The spelling of 55015444 in words is "fifty-five million, fifteen thousand, four hundred forty-four".