151469221 has 2 divisors, whose sum is σ = 151469222. Its totient is φ = 151469220.

The previous prime is 151469207. The next prime is 151469239. The reversal of 151469221 is 122964151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 72437121 = 8890^2 + 8511^2 .

It is an emirp because it is prime and its reverse (122964151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151469221 - 2¹⁷ = 151338149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151469251) 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, 75734610 + 75734611.

It is an arithmetic number, because the mean of its divisors is an integer number (75734611).

Almost surely, 2^151469221 is an apocalyptic number.

It is an amenable number.

151469221 is a deficient number, since it is larger than the sum of its proper divisors (1).

151469221 is an equidigital number, since it uses as much as digits as its factorization.

151469221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 151469221 is about 12307.2832501735. The cubic root of 151469221 is about 533.0584072186.

The spelling of 151469221 in words is "one hundred fifty-one million, four hundred sixty-nine thousand, two hundred twenty-one".