43256563 has 12 divisors (see below), whose sum is σ = 51943872. Its totient is φ = 35879760.

The previous prime is 43256561. The next prime is 43256567. The reversal of 43256563 is 36565234.

It is not a de Polignac number, because 43256563 - 2¹ = 43256561 is a prime.

It is a super-2 number, since 2×43256563² = 3742260485145938, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43256561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12720 + ... + 15757.

It is an arithmetic number, because the mean of its divisors is an integer number (4328656).

Almost surely, 2^43256563 is an apocalyptic number.

43256563 is a deficient number, since it is larger than the sum of its proper divisors (8687309).

43256563 is a wasteful number, since it uses less digits than its factorization.

43256563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28522 (or 28515 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 43256563 is about 6576.9721757052. The cubic root of 43256563 is about 351.0352018114.

The spelling of 43256563 in words is "forty-three million, two hundred fifty-six thousand, five hundred sixty-three".