155346403 has 4 divisors (see below), whose sum is σ = 156214440. Its totient is φ = 154478368.

The previous prime is 155346377. The next prime is 155346427. The reversal of 155346403 is 304643551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155346403 - 2⁵ = 155346371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155346463) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 433750 + ... + 434107.

It is an arithmetic number, because the mean of its divisors is an integer number (39053610).

Almost surely, 2^155346403 is an apocalyptic number.

155346403 is a deficient number, since it is larger than the sum of its proper divisors (868037).

155346403 is an equidigital number, since it uses as much as digits as its factorization.

155346403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868036.

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

The square root of 155346403 is about 12463.8037131527. The cubic root of 155346403 is about 537.5684029045.

Adding to 155346403 its reverse (304643551), we get a palindrome (459989954).

The spelling of 155346403 in words is "one hundred fifty-five million, three hundred forty-six thousand, four hundred three".