155233533 has 32 divisors (see below), whose sum is σ = 257644800. Its totient is φ = 80948736.

The previous prime is 155233501. The next prime is 155233541. The reversal of 155233533 is 335332551.

155233533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155233533 - 2⁵ = 155233501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155233533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155233583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21103 + ... + 27491.

It is an arithmetic number, because the mean of its divisors is an integer number (8051400).

Almost surely, 2^155233533 is an apocalyptic number.

155233533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155233533 is a deficient number, since it is larger than the sum of its proper divisors (102411267).

155233533 is a wasteful number, since it uses less digits than its factorization.

155233533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501.

The product of its digits is 20250, while the sum is 30.

The square root of 155233533 is about 12459.2749789063. The cubic root of 155233533 is about 537.4381777102.

The spelling of 155233533 in words is "one hundred fifty-five million, two hundred thirty-three thousand, five hundred thirty-three".