40620551 has 2 divisors, whose sum is σ = 40620552. Its totient is φ = 40620550.

The previous prime is 40620539. The next prime is 40620577. The reversal of 40620551 is 15502604.

40620551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40620551 - 2¹⁴ = 40604167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40620511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310275 + 20310276.

It is an arithmetic number, because the mean of its divisors is an integer number (20310276).

Almost surely, 2^40620551 is an apocalyptic number.

40620551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40620551 is an equidigital number, since it uses as much as digits as its factorization.

40620551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40620551 is about 6373.4253741611. The cubic root of 40620551 is about 343.7546672204.

The spelling of 40620551 in words is "forty million, six hundred twenty thousand, five hundred fifty-one".