55015055 has 4 divisors (see below), whose sum is σ = 66018072. Its totient is φ = 44012040.

The previous prime is 55015021. The next prime is 55015091. The reversal of 55015055 is 55051055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55051055 = 5 ⋅11010211.

It is not a de Polignac number, because 55015055 - 2⁶ = 55014991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5501501 + ... + 5501510.

It is an arithmetic number, because the mean of its divisors is an integer number (16504518).

Almost surely, 2^55015055 is an apocalyptic number.

55015055 is a deficient number, since it is larger than the sum of its proper divisors (11003017).

55015055 is a wasteful number, since it uses less digits than its factorization.

55015055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003016.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 55015055 is about 7417.2134255393. The cubic root of 55015055 is about 380.3299419708.

The spelling of 55015055 in words is "fifty-five million, fifteen thousand, fifty-five".