55015015 has 8 divisors (see below), whose sum is σ = 72019728. Its totient is φ = 40010880.

The previous prime is 55014991. The next prime is 55015019. The reversal of 55015015 is 51051055.

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

It is not a de Polignac number, because 55015015 - 2⁵ = 55014983 is a prime.

55015015 is a modest number, since divided by 15015 gives 55 as remainder.

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, 500082 + ... + 500191.

It is an arithmetic number, because the mean of its divisors is an integer number (9002466).

Almost surely, 2^55015015 is an apocalyptic number.

55015015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55015015 is a deficient number, since it is larger than the sum of its proper divisors (17004713).

55015015 is a wasteful number, since it uses less digits than its factorization.

55015015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000289.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 55015015 is about 7417.2107291083. The cubic root of 55015015 is about 380.3298497948.

The spelling of 55015015 in words is "fifty-five million, fifteen thousand, fifteen".