157531133 has 2 divisors, whose sum is σ = 157531134. Its totient is φ = 157531132.

The previous prime is 157531093. The next prime is 157531177. The reversal of 157531133 is 331135751.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82500889 + 75030244 = 9083^2 + 8662^2 .

It is an emirp because it is prime and its reverse (331135751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157531133 - 2¹² = 157527037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157531096 and 157531105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157531183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78765566 + 78765567.

It is an arithmetic number, because the mean of its divisors is an integer number (78765567).

Almost surely, 2^157531133 is an apocalyptic number.

It is an amenable number.

157531133 is a deficient number, since it is larger than the sum of its proper divisors (1).

157531133 is an equidigital number, since it uses as much as digits as its factorization.

157531133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4725, while the sum is 29.

The square root of 157531133 is about 12551.1407051311. The cubic root of 157531133 is about 540.0767300661.

Adding to 157531133 its reverse (331135751), we get a palindrome (488666884).

The spelling of 157531133 in words is "one hundred fifty-seven million, five hundred thirty-one thousand, one hundred thirty-three".