2578542 has 16 divisors (see below), whose sum is σ = 5175552. Its totient is φ = 856440.

The previous prime is 2578529. The next prime is 2578559. The reversal of 2578542 is 2458752.

It is an Ulam number.

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, 1617 + ... + 2787.

It is an arithmetic number, because the mean of its divisors is an integer number (323472).

2^2578542 is an apocalyptic number.

2578542 is an abundant number, since it is smaller than the sum of its proper divisors (2597010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2578542 is a wasteful number, since it uses less digits than its factorization.

2578542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its digits is 22400, while the sum is 33.

The square root of 2578542 is about 1605.7839207066. The cubic root of 2578542 is about 137.1275562667.

The spelling of 2578542 in words is "two million, five hundred seventy-eight thousand, five hundred forty-two".