52270261 has 2 divisors, whose sum is σ = 52270262. Its totient is φ = 52270260.

The previous prime is 52270201. The next prime is 52270301. The reversal of 52270261 is 16207225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49084036 + 3186225 = 7006^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 52270261 - 2⁷ = 52270133 is a prime.

It is equal to p_3129028 and since 52270261 and 3129028 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52270201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26135130 + 26135131.

It is an arithmetic number, because the mean of its divisors is an integer number (26135131).

Almost surely, 2^52270261 is an apocalyptic number.

52270261 is the 3865-th centered heptagonal number.

It is an amenable number.

52270261 is a deficient number, since it is larger than the sum of its proper divisors (1).

52270261 is an equidigital number, since it uses as much as digits as its factorization.

52270261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 52270261 is about 7229.8174942387. The cubic root of 52270261 is about 373.8966346698.

Adding to 52270261 its reverse (16207225), we get a palindrome (68477486).

The spelling of 52270261 in words is "fifty-two million, two hundred seventy thousand, two hundred sixty-one".