52312021 has 2 divisors, whose sum is σ = 52312022. Its totient is φ = 52312020.

The previous prime is 52311991. The next prime is 52312031. The reversal of 52312021 is 12021325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50608996 + 1703025 = 7114^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 52312021 - 2⁵ = 52311989 is a prime.

It is a super-2 number, since 2×52312021² = 5473095082208882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52311986 and 52312004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52312031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26156010 + 26156011.

It is an arithmetic number, because the mean of its divisors is an integer number (26156011).

Almost surely, 2^52312021 is an apocalyptic number.

It is an amenable number.

52312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52312021 is an equidigital number, since it uses as much as digits as its factorization.

52312021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 52312021 is about 7232.7049573448. The cubic root of 52312021 is about 373.9961799108.

Adding to 52312021 its reverse (12021325), we get a palindrome (64333346).

It can be divided in two parts, 523 and 12021, that added together give a square (12544 = 112²).

The spelling of 52312021 in words is "fifty-two million, three hundred twelve thousand, twenty-one".