152721133 has 2 divisors, whose sum is σ = 152721134. Its totient is φ = 152721132.

The previous prime is 152721119. The next prime is 152721137. The reversal of 152721133 is 331127251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151462249 + 1258884 = 12307^2 + 1122^2 .

It is a cyclic number.

It is not a de Polignac number, because 152721133 - 2²⁵ = 119166701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152721098 and 152721107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152721137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76360566 + 76360567.

It is an arithmetic number, because the mean of its divisors is an integer number (76360567).

Almost surely, 2^152721133 is an apocalyptic number.

It is an amenable number.

152721133 is a deficient number, since it is larger than the sum of its proper divisors (1).

152721133 is an equidigital number, since it uses as much as digits as its factorization.

152721133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 25.

The square root of 152721133 is about 12358.0392053108. The cubic root of 152721133 is about 534.5229777161.

Adding to 152721133 its reverse (331127251), we get a palindrome (483848384).

The spelling of 152721133 in words is "one hundred fifty-two million, seven hundred twenty-one thousand, one hundred thirty-three".