507242261 has 2 divisors, whose sum is σ = 507242262. Its totient is φ = 507242260.

The previous prime is 507242257. The next prime is 507242279. The reversal of 507242261 is 162242705.

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., 507105361 + 136900 = 22519^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 507242261 - 2² = 507242257 is a prime.

It is a super-2 number, since 2×507242261² = 514589422688784242, 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 (507242251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253621130 + 253621131.

It is an arithmetic number, because the mean of its divisors is an integer number (253621131).

Almost surely, 2^507242261 is an apocalyptic number.

It is an amenable number.

507242261 is a deficient number, since it is larger than the sum of its proper divisors (1).

507242261 is an equidigital number, since it uses as much as digits as its factorization.

507242261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 507242261 is about 22522.0394502807. The cubic root of 507242261 is about 797.5142955283.

Adding to 507242261 its reverse (162242705), we get a palindrome (669484966).

The spelling of 507242261 in words is "five hundred seven million, two hundred forty-two thousand, two hundred sixty-one".