52246781 has 2 divisors, whose sum is σ = 52246782. Its totient is φ = 52246780.

The previous prime is 52246771. The next prime is 52246787. The reversal of 52246781 is 18764225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45010681 + 7236100 = 6709^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 52246781 - 2¹⁴ = 52230397 is a prime.

It is a super-2 number, since 2×52246781² = 5459452249723922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52246787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26123390 + 26123391.

It is an arithmetic number, because the mean of its divisors is an integer number (26123391).

Almost surely, 2^52246781 is an apocalyptic number.

It is an amenable number.

52246781 is a deficient number, since it is larger than the sum of its proper divisors (1).

52246781 is an equidigital number, since it uses as much as digits as its factorization.

52246781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 52246781 is about 7228.1934810850. The cubic root of 52246781 is about 373.8406410214.

The spelling of 52246781 in words is "fifty-two million, two hundred forty-six thousand, seven hundred eighty-one".