155412903 has 8 divisors (see below), whose sum is σ = 210729600. Its totient is φ = 101852408.

The previous prime is 155412893. The next prime is 155412931. The reversal of 155412903 is 309214551.

155412903 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155412903 - 2⁵ = 155412871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155412953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438843 + ... + 439196.

It is an arithmetic number, because the mean of its divisors is an integer number (26341200).

Almost surely, 2^155412903 is an apocalyptic number.

155412903 is a deficient number, since it is larger than the sum of its proper divisors (55316697).

155412903 is an equidigital number, since it uses as much as digits as its factorization.

155412903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878101.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 155412903 is about 12466.4711526558. The cubic root of 155412903 is about 537.6450985951.

The spelling of 155412903 in words is "one hundred fifty-five million, four hundred twelve thousand, nine hundred three".