152566649 has 2 divisors, whose sum is σ = 152566650. Its totient is φ = 152566648.

The previous prime is 152566643. The next prime is 152566663. The reversal of 152566649 is 946665251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136726249 + 15840400 = 11693^2 + 3980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-152566649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (152566643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76283324 + 76283325.

It is an arithmetic number, because the mean of its divisors is an integer number (76283325).

Almost surely, 2^152566649 is an apocalyptic number.

It is an amenable number.

152566649 is a deficient number, since it is larger than the sum of its proper divisors (1).

152566649 is an equidigital number, since it uses as much as digits as its factorization.

152566649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The square root of 152566649 is about 12351.7872795802. The cubic root of 152566649 is about 534.3426859112.

The spelling of 152566649 in words is "one hundred fifty-two million, five hundred sixty-six thousand, six hundred forty-nine".