155133394 has 8 divisors (see below), whose sum is σ = 250600140. Its totient is φ = 71600016.

The previous prime is 155133371. The next prime is 155133397. The reversal of 155133394 is 493331551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 116532025 + 38601369 = 10795^2 + 6213^2 .

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

It is not an unprimeable number, because it can be changed into a prime (155133397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2983309 + ... + 2983360.

Almost surely, 2^155133394 is an apocalyptic number.

155133394 is a deficient number, since it is larger than the sum of its proper divisors (95466746).

155133394 is a wasteful number, since it uses less digits than its factorization.

155133394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966684.

The product of its digits is 24300, while the sum is 34.

The square root of 155133394 is about 12455.2556778253. The cubic root of 155133394 is about 537.3225882124.

The spelling of 155133394 in words is "one hundred fifty-five million, one hundred thirty-three thousand, three hundred ninety-four".