52946021 has 2 divisors, whose sum is σ = 52946022. Its totient is φ = 52946020.

The previous prime is 52946009. The next prime is 52946051. The reversal of 52946021 is 12064925.

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., 39513796 + 13432225 = 6286^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 52946021 - 2⁶ = 52945957 is a prime.

It is a super-2 number, since 2×52946021² = 5606562279464882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52946051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26473010 + 26473011.

It is an arithmetic number, because the mean of its divisors is an integer number (26473011).

Almost surely, 2^52946021 is an apocalyptic number.

It is an amenable number.

52946021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52946021 is an equidigital number, since it uses as much as digits as its factorization.

52946021 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 52946021 is about 7276.4016519156. The cubic root of 52946021 is about 375.5010097473.

The spelling of 52946021 in words is "fifty-two million, nine hundred forty-six thousand, twenty-one".