52420987 has 2 divisors, whose sum is σ = 52420988. Its totient is φ = 52420986.

The previous prime is 52420967. The next prime is 52421011. The reversal of 52420987 is 78902425.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52420987 - 2⁷ = 52420859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52420957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210493 + 26210494.

It is an arithmetic number, because the mean of its divisors is an integer number (26210494).

Almost surely, 2^52420987 is an apocalyptic number.

52420987 is a deficient number, since it is larger than the sum of its proper divisors (1).

52420987 is an equidigital number, since it uses as much as digits as its factorization.

52420987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 52420987 is about 7240.2339050614. The cubic root of 52420987 is about 374.2556779738.

The spelling of 52420987 in words is "fifty-two million, four hundred twenty thousand, nine hundred eighty-seven".