73155055 has 4 divisors (see below), whose sum is σ = 87786072. Its totient is φ = 58524040.

The previous prime is 73155013. The next prime is 73155059. The reversal of 73155055 is 55055137.

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

It is a de Polignac number, because none of the positive numbers 2^k-73155055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73155059) 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, 7315501 + ... + 7315510.

It is an arithmetic number, because the mean of its divisors is an integer number (21946518).

Almost surely, 2^73155055 is an apocalyptic number.

73155055 is a deficient number, since it is larger than the sum of its proper divisors (14631017).

73155055 is a wasteful number, since it uses less digits than its factorization.

73155055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14631016.

The product of its (nonzero) digits is 13125, while the sum is 31.

The square root of 73155055 is about 8553.0728396290. The cubic root of 73155055 is about 418.2296133219.

The spelling of 73155055 in words is "seventy-three million, one hundred fifty-five thousand, fifty-five".