215454454 has 4 divisors (see below), whose sum is σ = 323181684. Its totient is φ = 107727226.

The previous prime is 215454443. The next prime is 215454457. The reversal of 215454454 is 454454512.

215454454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215454457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53863612 + ... + 53863615.

It is an arithmetic number, because the mean of its divisors is an integer number (80795421).

Almost surely, 2^215454454 is an apocalyptic number.

215454454 is a deficient number, since it is larger than the sum of its proper divisors (107727230).

215454454 is a wasteful number, since it uses less digits than its factorization.

215454454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107727229.

The product of its digits is 64000, while the sum is 34.

The square root of 215454454 is about 14678.3668710112. The cubic root of 215454454 is about 599.4944389478.

The spelling of 215454454 in words is "two hundred fifteen million, four hundred fifty-four thousand, four hundred fifty-four".