155000034223 has 4 divisors (see below), whose sum is σ = 155498426928. Its totient is φ = 154501641520.

The previous prime is 155000034197. The next prime is 155000034253. The reversal of 155000034223 is 322430000551.

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 155000034223 - 2¹³ = 155000026031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155000034253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249195886 + ... + 249196507.

It is an arithmetic number, because the mean of its divisors is an integer number (38874606732).

Almost surely, 2^155000034223 is an apocalyptic number.

155000034223 is a deficient number, since it is larger than the sum of its proper divisors (498392705).

155000034223 is an equidigital number, since it uses as much as digits as its factorization.

155000034223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498392704.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 155000034223 its reverse (322430000551), we get a palindrome (477430034774).

The spelling of 155000034223 in words is "one hundred fifty-five billion, thirty-four thousand, two hundred twenty-three".