158211533 has 2 divisors, whose sum is σ = 158211534. Its totient is φ = 158211532.

The previous prime is 158211523. The next prime is 158211539. The reversal of 158211533 is 335112851.

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., 130942249 + 27269284 = 11443^2 + 5222^2 .

It is a cyclic number.

It is not a de Polignac number, because 158211533 - 2⁴ = 158211517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 158211496 and 158211505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158211539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79105766 + 79105767.

It is an arithmetic number, because the mean of its divisors is an integer number (79105767).

Almost surely, 2^158211533 is an apocalyptic number.

It is an amenable number.

158211533 is a deficient number, since it is larger than the sum of its proper divisors (1).

158211533 is an equidigital number, since it uses as much as digits as its factorization.

158211533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 158211533 is about 12578.2166064987. The cubic root of 158211533 is about 540.8531700758.

The spelling of 158211533 in words is "one hundred fifty-eight million, two hundred eleven thousand, five hundred thirty-three".