155422005 has 8 divisors (see below), whose sum is σ = 248675232. Its totient is φ = 82891728.

The previous prime is 155421983. The next prime is 155422009. The reversal of 155422005 is 500224551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155422005 - 2¹⁰ = 155420981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155422009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5180719 + ... + 5180748.

It is an arithmetic number, because the mean of its divisors is an integer number (31084404).

Almost surely, 2^155422005 is an apocalyptic number.

155422005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155422005 is a deficient number, since it is larger than the sum of its proper divisors (93253227).

155422005 is a wasteful number, since it uses less digits than its factorization.

155422005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10361475.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 155422005 is about 12466.8362065121. The cubic root of 155422005 is about 537.6555943993.

Adding to 155422005 its reverse (500224551), we get a palindrome (655646556).

The spelling of 155422005 in words is "one hundred fifty-five million, four hundred twenty-two thousand, five".