52421069 has 2 divisors, whose sum is σ = 52421070. Its totient is φ = 52421068.

The previous prime is 52421063. The next prime is 52421107. The reversal of 52421069 is 96012425.

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., 50055625 + 2365444 = 7075^2 + 1538^2 .

It is a cyclic number.

It is not a de Polignac number, because 52421069 - 2⁴ = 52421053 is a prime.

It is a super-2 number, since 2×52421069² = 5495936950205522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52421063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26210534 + 26210535.

It is an arithmetic number, because the mean of its divisors is an integer number (26210535).

Almost surely, 2^52421069 is an apocalyptic number.

It is an amenable number.

52421069 is a deficient number, since it is larger than the sum of its proper divisors (1).

52421069 is an equidigital number, since it uses as much as digits as its factorization.

52421069 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 52421069 is about 7240.2395678596. The cubic root of 52421069 is about 374.2558731179.

The spelling of 52421069 in words is "fifty-two million, four hundred twenty-one thousand, sixty-nine".