905130251 has 2 divisors, whose sum is σ = 905130252. Its totient is φ = 905130250.

The previous prime is 905130241. The next prime is 905130301. The reversal of 905130251 is 152031509.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-905130251 is a prime.

It is a Sophie Germain 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 905130251.

It is not a weakly prime, because it can be changed into another prime (905130241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452565125 + 452565126.

It is an arithmetic number, because the mean of its divisors is an integer number (452565126).

Almost surely, 2^905130251 is an apocalyptic number.

905130251 is a deficient number, since it is larger than the sum of its proper divisors (1).

905130251 is an equidigital number, since it uses as much as digits as its factorization.

905130251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 905130251 is about 30085.3826799660. The cubic root of 905130251 is about 967.3204294304.

The spelling of 905130251 in words is "nine hundred five million, one hundred thirty thousand, two hundred fifty-one".