55015003999 has 4 divisors (see below), whose sum is σ = 55024199064. Its totient is φ = 55005808936.

The previous prime is 55015003993. The next prime is 55015004003. The reversal of 55015003999 is 99930051055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55015003999 - 2¹⁹ = 55014479711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55015003993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4588552 + ... + 4600525.

It is an arithmetic number, because the mean of its divisors is an integer number (13756049766).

Almost surely, 2^55015003999 is an apocalyptic number.

55015003999 is a deficient number, since it is larger than the sum of its proper divisors (9195065).

55015003999 is an equidigital number, since it uses as much as digits as its factorization.

55015003999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195064.

The product of its (nonzero) digits is 273375, while the sum is 46.

The spelling of 55015003999 in words is "fifty-five billion, fifteen million, three thousand, nine hundred ninety-nine".