155212533 has 48 divisors (see below), whose sum is σ = 283136256. Its totient is φ = 79833600.

The previous prime is 155212517. The next prime is 155212559. The reversal of 155212533 is 335212551.

It is a happy number.

It is not a de Polignac number, because 155212533 - 2⁴ = 155212517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155212497 and 155212506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155212583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21483 + ... + 27783.

It is an arithmetic number, because the mean of its divisors is an integer number (5898672).

Almost surely, 2^155212533 is an apocalyptic number.

It is an amenable number.

155212533 is a deficient number, since it is larger than the sum of its proper divisors (127923723).

155212533 is a wasteful number, since it uses less digits than its factorization.

155212533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354 (or 6351 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 155212533 is about 12458.4322047359. The cubic root of 155212533 is about 537.4139417296.

The spelling of 155212533 in words is "one hundred fifty-five million, two hundred twelve thousand, five hundred thirty-three".