155559349 has 4 divisors (see below), whose sum is σ = 169701120. Its totient is φ = 141417580.

The previous prime is 155559343. The next prime is 155559353. The reversal of 155559349 is 943955551.

155559349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155559349 - 2⁵ = 155559317 is a prime.

It is a super-2 number, since 2×155559349² = 48397422122607602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155559299 and 155559308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155559343) 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, 7070869 + ... + 7070890.

It is an arithmetic number, because the mean of its divisors is an integer number (42425280).

Almost surely, 2^155559349 is an apocalyptic number.

It is an amenable number.

155559349 is a deficient number, since it is larger than the sum of its proper divisors (14141771).

155559349 is a wasteful number, since it uses less digits than its factorization.

155559349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141770.

The product of its digits is 607500, while the sum is 46.

The square root of 155559349 is about 12472.3433644203. The cubic root of 155559349 is about 537.8139203907.

It can be divided in two parts, 155 and 559349, that added together give a square (559504 = 748²).

The spelling of 155559349 in words is "one hundred fifty-five million, five hundred fifty-nine thousand, three hundred forty-nine".