40287851 has 2 divisors, whose sum is σ = 40287852. Its totient is φ = 40287850.

The previous prime is 40287833. The next prime is 40287869. The reversal of 40287851 is 15878204.

It is a balanced prime because it is at equal distance from previous prime (40287833) and next prime (40287869).

It is a cyclic number.

It is not a de Polignac number, because 40287851 - 2⁶ = 40287787 is a prime.

It is a super-2 number, since 2×40287851² = 3246221876396402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40287151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143925 + 20143926.

It is an arithmetic number, because the mean of its divisors is an integer number (20143926).

Almost surely, 2^40287851 is an apocalyptic number.

40287851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40287851 is an equidigital number, since it uses as much as digits as its factorization.

40287851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 40287851 is about 6347.2711459335. The cubic root of 40287851 is about 342.8135931210.

The spelling of 40287851 in words is "forty million, two hundred eighty-seven thousand, eight hundred fifty-one".