155603434 has 16 divisors (see below), whose sum is σ = 267817536. Its totient is φ = 66420000.

The previous prime is 155603401. The next prime is 155603443. The reversal of 155603434 is 434306551.

It is a junction number, because it is equal to n+sod(n) for n = 155603396 and 155603405.

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 in 7 ways as a sum of consecutive naturals, for example, 18627 + ... + 25654.

It is an arithmetic number, because the mean of its divisors is an integer number (16738596).

Almost surely, 2^155603434 is an apocalyptic number.

155603434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

155603434 is a deficient number, since it is larger than the sum of its proper divisors (112214102).

155603434 is a wasteful number, since it uses less digits than its factorization.

155603434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44541.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 155603434 is about 12474.1105494540. The cubic root of 155603434 is about 537.8647204818.

Adding to 155603434 its reverse (434306551), we get a palindrome (589909985).

The spelling of 155603434 in words is "one hundred fifty-five million, six hundred three thousand, four hundred thirty-four".