40782451 has 2 divisors, whose sum is σ = 40782452. Its totient is φ = 40782450.

The previous prime is 40782421. The next prime is 40782481. The reversal of 40782451 is 15428704.

It is a balanced prime because it is at equal distance from previous prime (40782421) and next prime (40782481).

It is a cyclic number.

It is not a de Polignac number, because 40782451 - 2⁵ = 40782419 is a prime.

It is not a weakly prime, because it can be changed into another prime (40782421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20391225 + 20391226.

It is an arithmetic number, because the mean of its divisors is an integer number (20391226).

Almost surely, 2^40782451 is an apocalyptic number.

40782451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40782451 is an equidigital number, since it uses as much as digits as its factorization.

40782451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 40782451 is about 6386.1139200612. The cubic root of 40782451 is about 344.2107590529.

The spelling of 40782451 in words is "forty million, seven hundred eighty-two thousand, four hundred fifty-one".