155312434 has 8 divisors (see below), whose sum is σ = 233111340. Its totient is φ = 77608656.

The previous prime is 155312413. The next prime is 155312471. The reversal of 155312434 is 434213551.

It can be written as a sum of positive squares in 2 ways, for example, as 155077209 + 235225 = 12453^2 + 485^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19549 + ... + 26320.

Almost surely, 2^155312434 is an apocalyptic number.

155312434 is a deficient number, since it is larger than the sum of its proper divisors (77798906).

155312434 is a wasteful number, since it uses less digits than its factorization.

155312434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47564.

The product of its digits is 7200, while the sum is 28.

The square root of 155312434 is about 12462.4409326584. The cubic root of 155312434 is about 537.5292173770.

Adding to 155312434 its reverse (434213551), we get a palindrome (589525985).

The spelling of 155312434 in words is "one hundred fifty-five million, three hundred twelve thousand, four hundred thirty-four".