2154505 has 8 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 1632816.

The previous prime is 2154499. The next prime is 2154533. The reversal of 2154505 is 5054512.

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 2154505 - 2⁹ = 2153993 is a prime.

It is a congruent number.

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, 11245 + ... + 11434.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

2^2154505 is an apocalyptic number.

It is an amenable number.

2154505 is a deficient number, since it is larger than the sum of its proper divisors (567095).

2154505 is a wasteful number, since it uses less digits than its factorization.

2154505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22703.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 2154505 is about 1467.8232182385. The cubic root of 2154505 is about 129.1563714768.

The spelling of 2154505 in words is "two million, one hundred fifty-four thousand, five hundred five".