40531801 has 2 divisors, whose sum is σ = 40531802. Its totient is φ = 40531800.

The previous prime is 40531789. The next prime is 40531817. The reversal of 40531801 is 10813504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30514576 + 10017225 = 5524^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 40531801 - 2¹⁵ = 40499033 is a prime.

It is equal to p_2464060 and since 40531801 and 2464060 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40531871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20265900 + 20265901.

It is an arithmetic number, because the mean of its divisors is an integer number (20265901).

Almost surely, 2^40531801 is an apocalyptic number.

It is an amenable number.

40531801 is a deficient number, since it is larger than the sum of its proper divisors (1).

40531801 is an equidigital number, since it uses as much as digits as its factorization.

40531801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 40531801 is about 6366.4590629329. The cubic root of 40531801 is about 343.5041333432.

The spelling of 40531801 in words is "forty million, five hundred thirty-one thousand, eight hundred one".