155430004 has 6 divisors (see below), whose sum is σ = 272002514. Its totient is φ = 77715000.

The previous prime is 155429983. The next prime is 155430029. The reversal of 155430004 is 400034551.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 40297104 = 10730^2 + 6348^2 .

It is a super-2 number, since 2×155430004² = 48316972286880032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19428747 + ... + 19428754.

Almost surely, 2^155430004 is an apocalyptic number.

It is an amenable number.

155430004 is a deficient number, since it is larger than the sum of its proper divisors (116572510).

155430004 is a wasteful number, since it uses less digits than its factorization.

155430004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38857505 (or 38857503 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 155430004 is about 12467.1570135296. The cubic root of 155430004 is about 537.6648179609.

Adding to 155430004 its reverse (400034551), we get a palindrome (555464555).

The spelling of 155430004 in words is "one hundred fifty-five million, four hundred thirty thousand, four".