980855251 has 2 divisors, whose sum is σ = 980855252. Its totient is φ = 980855250.

The previous prime is 980855191. The next prime is 980855261. The reversal of 980855251 is 152558089.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 980855251 - 2⁷ = 980855123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 980855198 and 980855207.

It is not a weakly prime, because it can be changed into another prime (980855261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490427625 + 490427626.

It is an arithmetic number, because the mean of its divisors is an integer number (490427626).

Almost surely, 2^980855251 is an apocalyptic number.

980855251 is a deficient number, since it is larger than the sum of its proper divisors (1).

980855251 is an equidigital number, since it uses as much as digits as its factorization.

980855251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 43.

The square root of 980855251 is about 31318.6087015372. The cubic root of 980855251 is about 993.5772536456.

The spelling of 980855251 in words is "nine hundred eighty million, eight hundred fifty-five thousand, two hundred fifty-one".