40531563 has 8 divisors (see below), whose sum is σ = 60046800. Its totient is φ = 27021024.

The previous prime is 40531523. The next prime is 40531567. The reversal of 40531563 is 36513504.

It is not a de Polignac number, because 40531563 - 2¹⁴ = 40515179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1501169 = 40531563 / (4 + 0 + 5 + 3 + 1 + 5 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (40531567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750558 + ... + 750611.

It is an arithmetic number, because the mean of its divisors is an integer number (7505850).

Almost surely, 2^40531563 is an apocalyptic number.

40531563 is a deficient number, since it is larger than the sum of its proper divisors (19515237).

40531563 is a wasteful number, since it uses less digits than its factorization.

40531563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501178 (or 1501172 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 40531563 is about 6366.4403711965. The cubic root of 40531563 is about 343.5034609975.

The spelling of 40531563 in words is "forty million, five hundred thirty-one thousand, five hundred sixty-three".