63320155 has 16 divisors (see below), whose sum is σ = 80668224. Its totient is φ = 47549440.

The previous prime is 63320149. The next prime is 63320183. The reversal of 63320155 is 55102336.

It is a happy number.

63320155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63320155 - 2¹⁵ = 63287387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42015 + ... + 43495.

It is an arithmetic number, because the mean of its divisors is an integer number (5041764).

Almost surely, 2^63320155 is an apocalyptic number.

63320155 is a deficient number, since it is larger than the sum of its proper divisors (17348069).

63320155 is a wasteful number, since it uses less digits than its factorization.

63320155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 63320155 is about 7957.3962450038. The cubic root of 63320155 is about 398.5786113686.

The spelling of 63320155 in words is "sixty-three million, three hundred twenty thousand, one hundred fifty-five".