40232261 has 2 divisors, whose sum is σ = 40232262. Its totient is φ = 40232260.

The previous prime is 40232249. The next prime is 40232263. The reversal of 40232261 is 16223204.

40232261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39929761 + 302500 = 6319^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 40232261 - 2¹⁰ = 40231237 is a prime.

Together with 40232263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40232263) by changing a digit.

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 as a sum of consecutive naturals, namely, 20116130 + 20116131.

It is an arithmetic number, because the mean of its divisors is an integer number (20116131).

Almost surely, 2^40232261 is an apocalyptic number.

It is an amenable number.

40232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40232261 is an equidigital number, since it uses as much as digits as its factorization.

40232261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40232261 is about 6342.8905871062. The cubic root of 40232261 is about 342.6558468114.

Adding to 40232261 its reverse (16223204), we get a palindrome (56455465).

The spelling of 40232261 in words is "forty million, two hundred thirty-two thousand, two hundred sixty-one".