55015013 has 8 divisors (see below), whose sum is σ = 58453920. Its totient is φ = 51630480.

The previous prime is 55014991. The next prime is 55015019. The reversal of 55015013 is 31051055.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55015013 - 2²² = 50820709 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 (55015019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11498 + ... + 15563.

It is an arithmetic number, because the mean of its divisors is an integer number (7306740).

Almost surely, 2^55015013 is an apocalyptic number.

It is an amenable number.

55015013 is a deficient number, since it is larger than the sum of its proper divisors (3438907).

55015013 is a wasteful number, since it uses less digits than its factorization.

55015013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27187.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 55015013 is about 7417.2105942868. The cubic root of 55015013 is about 380.3298451860.

Adding to 55015013 its reverse (31051055), we get a palindrome (86066068).

The spelling of 55015013 in words is "fifty-five million, fifteen thousand, thirteen".