155404533 has 16 divisors (see below), whose sum is σ = 218401920. Its totient is φ = 98140224.

The previous prime is 155404511. The next prime is 155404547. The reversal of 155404533 is 335404551.

It is not a de Polignac number, because 155404533 - 2¹⁰ = 155403509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155404533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155404433) 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 15 ways as a sum of consecutive naturals, for example, 12241 + ... + 21462.

It is an arithmetic number, because the mean of its divisors is an integer number (13650120).

Almost surely, 2^155404533 is an apocalyptic number.

It is an amenable number.

155404533 is a deficient number, since it is larger than the sum of its proper divisors (62997387).

155404533 is a wasteful number, since it uses less digits than its factorization.

155404533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33788.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 155404533 is about 12466.1354476839. The cubic root of 155404533 is about 537.6354465217.

The spelling of 155404533 in words is "one hundred fifty-five million, four hundred four thousand, five hundred thirty-three".