52420961 has 2 divisors, whose sum is σ = 52420962. Its totient is φ = 52420960.

The previous prime is 52420957. The next prime is 52420967. The reversal of 52420961 is 16902425.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31854736 + 20566225 = 5644^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 52420961 - 2² = 52420957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (52420967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210480 + 26210481.

It is an arithmetic number, because the mean of its divisors is an integer number (26210481).

Almost surely, 2^52420961 is an apocalyptic number.

It is an amenable number.

52420961 is a deficient number, since it is larger than the sum of its proper divisors (1).

52420961 is an equidigital number, since it uses as much as digits as its factorization.

52420961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 52420961 is about 7240.2321095390. The cubic root of 52420961 is about 374.2556160987.

The spelling of 52420961 in words is "fifty-two million, four hundred twenty thousand, nine hundred sixty-one".