155075345 has 4 divisors (see below), whose sum is σ = 186090420. Its totient is φ = 124060272.

The previous prime is 155075317. The next prime is 155075351. The reversal of 155075345 is 543570551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543570551 = 18229 ⋅29819.

It can be written as a sum of positive squares in 2 ways, for example, as 92602129 + 62473216 = 9623^2 + 7904^2 .

It is a cyclic number.

It is not a de Polignac number, because 155075345 - 2²⁶ = 87966481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15507530 + ... + 15507539.

It is an arithmetic number, because the mean of its divisors is an integer number (46522605).

Almost surely, 2^155075345 is an apocalyptic number.

It is an amenable number.

155075345 is a deficient number, since it is larger than the sum of its proper divisors (31015075).

155075345 is an equidigital number, since it uses as much as digits as its factorization.

155075345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31015074.

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 155075345 is about 12452.9251583714. The cubic root of 155075345 is about 537.2555600260.

The spelling of 155075345 in words is "one hundred fifty-five million, seventy-five thousand, three hundred forty-five".