151665233 has 2 divisors, whose sum is σ = 151665234. Its totient is φ = 151665232.

The previous prime is 151665181. The next prime is 151665271. The reversal of 151665233 is 332566151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113571649 + 38093584 = 10657^2 + 6172^2 .

It is an emirp because it is prime and its reverse (332566151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151665233 - 2⁸ = 151664977 is a 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 151665233.

It is not a weakly prime, because it can be changed into another prime (151665133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75832616 + 75832617.

It is an arithmetic number, because the mean of its divisors is an integer number (75832617).

Almost surely, 2^151665233 is an apocalyptic number.

It is an amenable number.

151665233 is a deficient number, since it is larger than the sum of its proper divisors (1).

151665233 is an equidigital number, since it uses as much as digits as its factorization.

151665233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 151665233 is about 12315.2439277507. The cubic root of 151665233 is about 533.2882466660.

The spelling of 151665233 in words is "one hundred fifty-one million, six hundred sixty-five thousand, two hundred thirty-three".