2545438 has 16 divisors (see below), whose sum is σ = 4404960. Its totient is φ = 1080576.

The previous prime is 2545429. The next prime is 2545447. The reversal of 2545438 is 8345452.

It is an interprime number because it is at equal distance from previous prime (2545429) and next prime (2545447).

It is a super-2 number, since 2×2545438² = 12958509223688, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778 + ... + 2386.

It is an arithmetic number, because the mean of its divisors is an integer number (275310).

2^2545438 is an apocalyptic number.

2545438 is a deficient number, since it is larger than the sum of its proper divisors (1859522).

2545438 is a wasteful number, since it uses less digits than its factorization.

2545438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731.

The product of its digits is 19200, while the sum is 31.

The square root of 2545438 is about 1595.4428852203. The cubic root of 2545438 is about 136.5382003851.

The spelling of 2545438 in words is "two million, five hundred forty-five thousand, four hundred thirty-eight".