275310421 has 2 divisors, whose sum is σ = 275310422. Its totient is φ = 275310420.

The previous prime is 275310407. The next prime is 275310439. The reversal of 275310421 is 124013572.

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., 177023025 + 98287396 = 13305^2 + 9914^2 .

It is a cyclic number.

It is not a de Polignac number, because 275310421 - 2⁵ = 275310389 is a prime.

It is a super-2 number, since 2×275310421² = 151591655822394482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275310491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137655210 + 137655211.

It is an arithmetic number, because the mean of its divisors is an integer number (137655211).

Almost surely, 2^275310421 is an apocalyptic number.

It is an amenable number.

275310421 is a deficient number, since it is larger than the sum of its proper divisors (1).

275310421 is an equidigital number, since it uses as much as digits as its factorization.

275310421 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 275310421 is about 16592.4808573040. The cubic root of 275310421 is about 650.5403168086.

Adding to 275310421 its reverse (124013572), we get a palindrome (399323993).

The spelling of 275310421 in words is "two hundred seventy-five million, three hundred ten thousand, four hundred twenty-one".