155353243 has 4 divisors (see below), whose sum is σ = 155380240. Its totient is φ = 155326248.

The previous prime is 155353241. The next prime is 155353267. The reversal of 155353243 is 342353551.

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 155353243 - 2¹ = 155353241 is a prime.

It is a super-2 number, since 2×155353243² = 48269260221234098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155353241) 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, 1023 + ... + 17656.

It is an arithmetic number, because the mean of its divisors is an integer number (38845060).

Almost surely, 2^155353243 is an apocalyptic number.

155353243 is a deficient number, since it is larger than the sum of its proper divisors (26997).

155353243 is an equidigital number, since it uses as much as digits as its factorization.

155353243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26996.

The product of its digits is 27000, while the sum is 31.

The square root of 155353243 is about 12464.0781046975. The cubic root of 155353243 is about 537.5762926138.

The spelling of 155353243 in words is "one hundred fifty-five million, three hundred fifty-three thousand, two hundred forty-three".