248039261 has 2 divisors, whose sum is σ = 248039262. Its totient is φ = 248039260.

The previous prime is 248039249. The next prime is 248039273. The reversal of 248039261 is 162930842.

It is a balanced prime because it is at equal distance from previous prime (248039249) and next prime (248039273).

It can be written as a sum of positive squares in only one way, i.e., 221712100 + 26327161 = 14890^2 + 5131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248039261 is a prime.

It is a super-2 number, since 2×248039261² = 123046949994852242, which contains 22 as substring.

It is a Chen prime.

It is equal to p_13577813 and since 248039261 and 13577813 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 (248039761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124019630 + 124019631.

It is an arithmetic number, because the mean of its divisors is an integer number (124019631).

Almost surely, 2^248039261 is an apocalyptic number.

It is an amenable number.

248039261 is a deficient number, since it is larger than the sum of its proper divisors (1).

248039261 is an equidigital number, since it uses as much as digits as its factorization.

248039261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 248039261 is about 15749.2622366891. The cubic root of 248039261 is about 628.3092829616.

The spelling of 248039261 in words is "two hundred forty-eight million, thirty-nine thousand, two hundred sixty-one".