40035251 has 2 divisors, whose sum is σ = 40035252. Its totient is φ = 40035250.

The previous prime is 40035241. The next prime is 40035271. The reversal of 40035251 is 15253004.

It is an a-pointer prime, because the next prime (40035271) can be obtained adding 40035251 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40035251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40035241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20017625 + 20017626.

It is an arithmetic number, because the mean of its divisors is an integer number (20017626).

Almost surely, 2^40035251 is an apocalyptic number.

40035251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40035251 is an equidigital number, since it uses as much as digits as its factorization.

40035251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 40035251 is about 6327.3415428598. The cubic root of 40035251 is about 342.0956237745.

Adding to 40035251 its reverse (15253004), we get a palindrome (55288255).

The spelling of 40035251 in words is "forty million, thirty-five thousand, two hundred fifty-one".