155422469 has 4 divisors (see below), whose sum is σ = 155476620. Its totient is φ = 155368320.

The previous prime is 155422457. The next prime is 155422471. The reversal of 155422469 is 964224551.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150970369 + 4452100 = 12287^2 + 2110^2 .

It is a cyclic number.

It is not a de Polignac number, because 155422469 - 2¹⁶ = 155356933 is a prime.

It is a super-2 number, since 2×155422469² = 48312287740111922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155422409) 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, 22514 + ... + 28595.

It is an arithmetic number, because the mean of its divisors is an integer number (38869155).

Almost surely, 2^155422469 is an apocalyptic number.

It is an amenable number.

155422469 is a deficient number, since it is larger than the sum of its proper divisors (54151).

155422469 is an equidigital number, since it uses as much as digits as its factorization.

155422469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54150.

The product of its digits is 86400, while the sum is 38.

The square root of 155422469 is about 12466.8548158708. The cubic root of 155422469 is about 537.6561294414.

The spelling of 155422469 in words is "one hundred fifty-five million, four hundred twenty-two thousand, four hundred sixty-nine".