155203402 has 16 divisors (see below), whose sum is σ = 246260160. Its totient is φ = 73209312.

The previous prime is 155203283. The next prime is 155203417. The reversal of 155203402 is 204302551.

It is a super-3 number, since 3×155203402³ (a number of 26 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 19752 + ... + 26467.

It is an arithmetic number, because the mean of its divisors is an integer number (15391260).

Almost surely, 2^155203402 is an apocalyptic number.

155203402 is a deficient number, since it is larger than the sum of its proper divisors (91056758).

155203402 is a wasteful number, since it uses less digits than its factorization.

155203402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46317.

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

The square root of 155203402 is about 12458.0657407159. The cubic root of 155203402 is about 537.4034030125.

Adding to 155203402 its reverse (204302551), we get a palindrome (359505953).

The spelling of 155203402 in words is "one hundred fifty-five million, two hundred three thousand, four hundred two".