55015047 has 12 divisors (see below), whose sum is σ = 80473120. Its totient is φ = 36211968.

The previous prime is 55015021. The next prime is 55015091. The reversal of 55015047 is 74051055.

It is not a de Polignac number, because 55015047 - 2⁶ = 55014983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55015047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55015547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37978 + ... + 39399.

Almost surely, 2^55015047 is an apocalyptic number.

55015047 is a deficient number, since it is larger than the sum of its proper divisors (25458073).

55015047 is a wasteful number, since it uses less digits than its factorization.

55015047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77462 (or 77459 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55015047 is about 7417.2128862532. The cubic root of 55015047 is about 380.3299235356.

The spelling of 55015047 in words is "fifty-five million, fifteen thousand, forty-seven".