155311345 has 16 divisors (see below), whose sum is σ = 213494400. Its totient is φ = 106251264.

The previous prime is 155311309. The next prime is 155311349. The reversal of 155311345 is 543113551.

155311345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155311345 - 2⁷ = 155311217 is a prime.

It is a super-2 number, since 2×155311345² = 48243227771418050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155311349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10774 + ... + 20656.

It is an arithmetic number, because the mean of its divisors is an integer number (13343400).

Almost surely, 2^155311345 is an apocalyptic number.

It is an amenable number.

155311345 is a deficient number, since it is larger than the sum of its proper divisors (58183055).

155311345 is an equidigital number, since it uses as much as digits as its factorization.

155311345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344.

The product of its digits is 4500, while the sum is 28.

The square root of 155311345 is about 12462.3972413015. The cubic root of 155311345 is about 537.5279610477.

Adding to 155311345 its reverse (543113551), we get a palindrome (698424896).

The spelling of 155311345 in words is "one hundred fifty-five million, three hundred eleven thousand, three hundred forty-five".