151669997 has 2 divisors, whose sum is σ = 151669998. Its totient is φ = 151669996.

The previous prime is 151669979. The next prime is 151670023. The reversal of 151669997 is 799966151.

It is a happy number.

Together with previous prime (151669979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150945796 + 724201 = 12286^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 151669997 - 2⁸ = 151669741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151669907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75834998 + 75834999.

It is an arithmetic number, because the mean of its divisors is an integer number (75834999).

Almost surely, 2^151669997 is an apocalyptic number.

It is an amenable number.

151669997 is a deficient number, since it is larger than the sum of its proper divisors (1).

151669997 is an equidigital number, since it uses as much as digits as its factorization.

151669997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 53.

The square root of 151669997 is about 12315.4373450560. The cubic root of 151669997 is about 533.2938303641.

The spelling of 151669997 in words is "one hundred fifty-one million, six hundred sixty-nine thousand, nine hundred ninety-seven".