155343427 has 4 divisors (see below), whose sum is σ = 159541936. Its totient is φ = 151144920.

The previous prime is 155343407. The next prime is 155343439. The reversal of 155343427 is 724343551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155343427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155343392 and 155343401.

It is not an unprimeable number, because it can be changed into a prime (155343407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099199 + ... + 2099272.

It is an arithmetic number, because the mean of its divisors is an integer number (39885484).

Almost surely, 2^155343427 is an apocalyptic number.

155343427 is a deficient number, since it is larger than the sum of its proper divisors (4198509).

155343427 is an equidigital number, since it uses as much as digits as its factorization.

155343427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198508.

The product of its digits is 50400, while the sum is 34.

The square root of 155343427 is about 12463.6843268754. The cubic root of 155343427 is about 537.5649701165.

Adding to 155343427 its reverse (724343551), we get a palindrome (879686978).

The spelling of 155343427 in words is "one hundred fifty-five million, three hundred forty-three thousand, four hundred twenty-seven".