155243933 has 8 divisors (see below), whose sum is σ = 167513976. Its totient is φ = 143020800.

The previous prime is 155243929. The next prime is 155243981. The reversal of 155243933 is 339342551.

It can be written as a sum of positive squares in 4 ways, for example, as 813604 + 154430329 = 902^2 + 12427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155243933 - 2² = 155243929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155243893 and 155243902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155243993) 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 7 ways as a sum of consecutive naturals, for example, 4688 + ... + 18233.

It is an arithmetic number, because the mean of its divisors is an integer number (20939247).

Almost surely, 2^155243933 is an apocalyptic number.

155243933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155243933 is a deficient number, since it is larger than the sum of its proper divisors (12270043).

155243933 is a wasteful number, since it uses less digits than its factorization.

155243933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23455.

The product of its digits is 48600, while the sum is 35.

The square root of 155243933 is about 12459.6923316750. The cubic root of 155243933 is about 537.4501794818.

The spelling of 155243933 in words is "one hundred fifty-five million, two hundred forty-three thousand, nine hundred thirty-three".