2155654 has 4 divisors (see below), whose sum is σ = 3233484. Its totient is φ = 1077826.

The previous prime is 2155639. The next prime is 2155661. The reversal of 2155654 is 4565512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538912 + ... + 538915.

It is an arithmetic number, because the mean of its divisors is an integer number (808371).

2^2155654 is an apocalyptic number.

2155654 is a deficient number, since it is larger than the sum of its proper divisors (1077830).

2155654 is a wasteful number, since it uses less digits than its factorization.

2155654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077829.

The product of its digits is 6000, while the sum is 28.

The square root of 2155654 is about 1468.2145619766. The cubic root of 2155654 is about 129.1793271438.

It can be divided in two parts, 2155 and 654, that added together give a square (2809 = 53²).

The spelling of 2155654 in words is "two million, one hundred fifty-five thousand, six hundred fifty-four".