248128997 has 2 divisors, whose sum is σ = 248128998. Its totient is φ = 248128996.

The previous prime is 248128981. The next prime is 248129003. The reversal of 248128997 is 799821842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127260961 + 120868036 = 11281^2 + 10994^2 .

It is a cyclic number.

It is not a de Polignac number, because 248128997 - 2⁴ = 248128981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248128927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124064498 + 124064499.

It is an arithmetic number, because the mean of its divisors is an integer number (124064499).

Almost surely, 2^248128997 is an apocalyptic number.

It is an amenable number.

248128997 is a deficient number, since it is larger than the sum of its proper divisors (1).

248128997 is an equidigital number, since it uses as much as digits as its factorization.

248128997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 248128997 is about 15752.1108744193. The cubic root of 248128997 is about 628.3850440376.

The spelling of 248128997 in words is "two hundred forty-eight million, one hundred twenty-eight thousand, nine hundred ninety-seven".