247901 has 2 divisors, whose sum is σ = 247902. Its totient is φ = 247900.

The previous prime is 247889. The next prime is 247913. The reversal of 247901 is 109742.

It is a balanced prime because it is at equal distance from previous prime (247889) and next prime (247913).

It can be written as a sum of positive squares in only one way, i.e., 184900 + 63001 = 430^2 + 251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247901 is a prime.

It is a super-2 number, since 2×247901² = 122909811602, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123950 + 123951.

It is an arithmetic number, because the mean of its divisors is an integer number (123951).

2²⁴⁷⁹⁰¹ is an apocalyptic number.

It is an amenable number.

247901 is a deficient number, since it is larger than the sum of its proper divisors (1).

247901 is an equidigital number, since it uses as much as digits as its factorization.

247901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 247901 is about 497.8965756058. The cubic root of 247901 is about 62.8192518092.

The spelling of 247901 in words is "two hundred forty-seven thousand, nine hundred one".