151280009 has 2 divisors, whose sum is σ = 151280010. Its totient is φ = 151280008.

The previous prime is 151279963. The next prime is 151280011. The reversal of 151280009 is 900082151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149328400 + 1951609 = 12220^2 + 1397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151280009 is a prime.

It is a super-2 number, since 2×151280009² = 45771282246080162, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 151280011, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 151280009.

It is not a weakly prime, because it can be changed into another prime (151280029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75640004 + 75640005.

It is an arithmetic number, because the mean of its divisors is an integer number (75640005).

Almost surely, 2^151280009 is an apocalyptic number.

It is an amenable number.

151280009 is a deficient number, since it is larger than the sum of its proper divisors (1).

151280009 is an equidigital number, since it uses as much as digits as its factorization.

151280009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 151280009 is about 12299.5938550832. The cubic root of 151280009 is about 532.8363531413.

The spelling of 151280009 in words is "one hundred fifty-one million, two hundred eighty thousand, nine".