2123554 has 32 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 927360.

The previous prime is 2123491. The next prime is 2123557. The reversal of 2123554 is 4553212.

It is not an unprimeable number, because it can be changed into a prime (2123557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45159 + ... + 45205.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^2123554 is an apocalyptic number.

2123554 is a deficient number, since it is larger than the sum of its proper divisors (1505246).

2123554 is a wasteful number, since it uses less digits than its factorization.

2123554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

The product of its digits is 1200, while the sum is 22.

The square root of 2123554 is about 1457.2419154005. The cubic root of 2123554 is about 128.5349115577.

Adding to 2123554 its reverse (4553212), we get a palindrome (6676766).

The spelling of 2123554 in words is "two million, one hundred twenty-three thousand, five hundred fifty-four".