155426669 has 4 divisors (see below), whose sum is σ = 163607040. Its totient is φ = 147246300.

The previous prime is 155426659. The next prime is 155426671. The reversal of 155426669 is 966624551.

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 a de Polignac number, because none of the positive numbers 2^k-155426669 is a prime.

It is a super-2 number, since 2×155426669² = 48314898872871122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155426659) 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, 4090157 + ... + 4090194.

It is an arithmetic number, because the mean of its divisors is an integer number (40901760).

Almost surely, 2^155426669 is an apocalyptic number.

155426669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

155426669 is a deficient number, since it is larger than the sum of its proper divisors (8180371).

155426669 is an equidigital number, since it uses as much as digits as its factorization.

155426669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180370.

The product of its digits is 388800, while the sum is 44.

The square root of 155426669 is about 12467.0232613884. The cubic root of 155426669 is about 537.6609724464.

The spelling of 155426669 in words is "one hundred fifty-five million, four hundred twenty-six thousand, six hundred sixty-nine".