55577155 has 8 divisors (see below), whose sum is σ = 66985200. Its totient is φ = 44266656.

The previous prime is 55577117. The next prime is 55577209. The reversal of 55577155 is 55177555.

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 55577155 - 2¹⁹ = 55052867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23125 + ... + 25414.

It is an arithmetic number, because the mean of its divisors is an integer number (8373150).

Almost surely, 2^55577155 is an apocalyptic number.

55577155 is a deficient number, since it is larger than the sum of its proper divisors (11408045).

55577155 is a wasteful number, since it uses less digits than its factorization.

55577155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48773.

The product of its digits is 153125, while the sum is 40.

The square root of 55577155 is about 7455.0087189755. The cubic root of 55577155 is about 381.6208581606.

The spelling of 55577155 in words is "fifty-five million, five hundred seventy-seven thousand, one hundred fifty-five".