253010321 has 2 divisors, whose sum is σ = 253010322. Its totient is φ = 253010320.

The previous prime is 253010299. The next prime is 253010369. The reversal of 253010321 is 123010352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 121793296 = 11455^2 + 11036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253010321 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253010321.

It is not a weakly prime, because it can be changed into another prime (253010521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126505160 + 126505161.

It is an arithmetic number, because the mean of its divisors is an integer number (126505161).

Almost surely, 2^253010321 is an apocalyptic number.

It is an amenable number.

253010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

253010321 is an equidigital number, since it uses as much as digits as its factorization.

253010321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 253010321 is about 15906.2981551334. The cubic root of 253010321 is about 632.4789546550.

Adding to 253010321 its reverse (123010352), we get a palindrome (376020673).

The spelling of 253010321 in words is "two hundred fifty-three million, ten thousand, three hundred twenty-one".