55015007 has 4 divisors (see below), whose sum is σ = 56053080. Its totient is φ = 53976936.

The previous prime is 55014991. The next prime is 55015019. The reversal of 55015007 is 70051055.

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 55015007 - 2⁴ = 55014991 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 (55017007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518957 + ... + 519062.

It is an arithmetic number, because the mean of its divisors is an integer number (14013270).

Almost surely, 2^55015007 is an apocalyptic number.

55015007 is a deficient number, since it is larger than the sum of its proper divisors (1038073).

55015007 is a wasteful number, since it uses less digits than its factorization.

55015007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038072.

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 55015007 is about 7417.2101898220. The cubic root of 55015007 is about 380.3298313596.

The spelling of 55015007 in words is "fifty-five million, fifteen thousand, seven".