40251007 has 2 divisors, whose sum is σ = 40251008. Its totient is φ = 40251006.

The previous prime is 40250981. The next prime is 40251017. The reversal of 40251007 is 70015204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40251007 - 2¹⁹ = 39726719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40251017) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20125503 + 20125504.

It is an arithmetic number, because the mean of its divisors is an integer number (20125504).

Almost surely, 2^40251007 is an apocalyptic number.

40251007 is a deficient number, since it is larger than the sum of its proper divisors (1).

40251007 is an equidigital number, since it uses as much as digits as its factorization.

40251007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 40251007 is about 6344.3681324463. The cubic root of 40251007 is about 342.7090580814.

The spelling of 40251007 in words is "forty million, two hundred fifty-one thousand, seven".