63120355 has 4 divisors (see below), whose sum is σ = 75744432. Its totient is φ = 50496280.

The previous prime is 63120353. The next prime is 63120367. The reversal of 63120355 is 55302136.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 63120355 - 2¹ = 63120353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63120353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6312031 + ... + 6312040.

It is an arithmetic number, because the mean of its divisors is an integer number (18936108).

Almost surely, 2^63120355 is an apocalyptic number.

63120355 is a deficient number, since it is larger than the sum of its proper divisors (12624077).

63120355 is a wasteful number, since it uses less digits than its factorization.

63120355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624076.

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

The square root of 63120355 is about 7944.8319680154. The cubic root of 63120355 is about 398.1589455467.

The spelling of 63120355 in words is "sixty-three million, one hundred twenty thousand, three hundred fifty-five".