40620451 has 2 divisors, whose sum is σ = 40620452. Its totient is φ = 40620450.

The previous prime is 40620439. The next prime is 40620467. The reversal of 40620451 is 15402604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40620451 - 2¹⁹ = 40096163 is a prime.

It is not a weakly prime, because it can be changed into another prime (40620421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310225 + 20310226.

It is an arithmetic number, because the mean of its divisors is an integer number (20310226).

Almost surely, 2^40620451 is an apocalyptic number.

40620451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40620451 is an equidigital number, since it uses as much as digits as its factorization.

40620451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40620451 is about 6373.4175290812. The cubic root of 40620451 is about 343.7543851341.

The spelling of 40620451 in words is "forty million, six hundred twenty thousand, four hundred fifty-one".