155234403 has 12 divisors (see below), whose sum is σ = 228458880. Its totient is φ = 101536656.

The previous prime is 155234393. The next prime is 155234407. The reversal of 155234403 is 304432551.

It is not a de Polignac number, because 155234403 - 2⁸ = 155234147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155234407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162243 + ... + 163196.

It is an arithmetic number, because the mean of its divisors is an integer number (19038240).

Almost surely, 2^155234403 is an apocalyptic number.

155234403 is a deficient number, since it is larger than the sum of its proper divisors (73224477).

155234403 is a wasteful number, since it uses less digits than its factorization.

155234403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325498 (or 325495 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 155234403 is about 12459.3098926064. The cubic root of 155234403 is about 537.4391817251.

Adding to 155234403 its reverse (304432551), we get a palindrome (459666954).

The spelling of 155234403 in words is "one hundred fifty-five million, two hundred thirty-four thousand, four hundred three".