152665481 has 2 divisors, whose sum is σ = 152665482. Its totient is φ = 152665480.

The previous prime is 152665433. The next prime is 152665519. The reversal of 152665481 is 184566251.

It is a happy number.

152665481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (152665519) can be obtained adding 152665481 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100320256 + 52345225 = 10016^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 152665481 - 2²² = 148471177 is a prime.

It is a super-2 number, since 2×152665481² = 46613498177922722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (152065481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76332740 + 76332741.

It is an arithmetic number, because the mean of its divisors is an integer number (76332741).

Almost surely, 2^152665481 is an apocalyptic number.

It is an amenable number.

152665481 is a deficient number, since it is larger than the sum of its proper divisors (1).

152665481 is an equidigital number, since it uses as much as digits as its factorization.

152665481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 152665481 is about 12355.7873484453. The cubic root of 152665481 is about 534.4580426146.

The spelling of 152665481 in words is "one hundred fifty-two million, six hundred sixty-five thousand, four hundred eighty-one".