2545838 has 4 divisors (see below), whose sum is σ = 3818760. Its totient is φ = 1272918.

The previous prime is 2545817. The next prime is 2545843. The reversal of 2545838 is 8385452.

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

It is a super-2 number, since 2×2545838² = 12962582244488, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2545798 and 2545807.

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, 636458 + ... + 636461.

It is an arithmetic number, because the mean of its divisors is an integer number (954690).

2^2545838 is an apocalyptic number.

2545838 is a deficient number, since it is larger than the sum of its proper divisors (1272922).

2545838 is a wasteful number, since it uses less digits than its factorization.

2545838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272921.

The product of its digits is 38400, while the sum is 35.

The square root of 2545838 is about 1595.5682373374. The cubic root of 2545838 is about 136.5453520579.

The spelling of 2545838 in words is "two million, five hundred forty-five thousand, eight hundred thirty-eight".