2155534 has 16 divisors (see below), whose sum is σ = 3358656. Its totient is φ = 1036800.

The previous prime is 2155519. The next prime is 2155579. The reversal of 2155534 is 4355512.

It is a junction number, because it is equal to n+sod(n) for n = 2155499 and 2155508.

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, 7819 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (209916).

2^2155534 is an apocalyptic number.

2155534 is a deficient number, since it is larger than the sum of its proper divisors (1203122).

2155534 is a wasteful number, since it uses less digits than its factorization.

2155534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411.

The product of its digits is 3000, while the sum is 25.

The square root of 2155534 is about 1468.1736954461. The cubic root of 2155534 is about 129.1769300666.

It can be divided in two parts, 21 and 55534, that added together give a palindrome (55555).

The spelling of 2155534 in words is "two million, one hundred fifty-five thousand, five hundred thirty-four".