55155115 has 4 divisors (see below), whose sum is σ = 66186144. Its totient is φ = 44124088.

The previous prime is 55155109. The next prime is 55155131. The reversal of 55155115 is 51155155.

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 55155115 - 2¹⁷ = 55024043 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is a plaindrome in base 16.

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, 5515507 + ... + 5515516.

It is an arithmetic number, because the mean of its divisors is an integer number (16546536).

Almost surely, 2^55155115 is an apocalyptic number.

55155115 is a deficient number, since it is larger than the sum of its proper divisors (11031029).

55155115 is a wasteful number, since it uses less digits than its factorization.

55155115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031028.

The product of its digits is 3125, while the sum is 28.

The square root of 55155115 is about 7426.6489751435. The cubic root of 55155115 is about 380.6524226115.

The spelling of 55155115 in words is "fifty-five million, one hundred fifty-five thousand, one hundred fifteen".