155235422 has 4 divisors (see below), whose sum is σ = 232853136. Its totient is φ = 77617710.

The previous prime is 155235413. The next prime is 155235433. The reversal of 155235422 is 224532551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224532551 = 13553 ⋅16567.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38808854 + ... + 38808857.

It is an arithmetic number, because the mean of its divisors is an integer number (58213284).

Almost surely, 2^155235422 is an apocalyptic number.

155235422 is a deficient number, since it is larger than the sum of its proper divisors (77617714).

155235422 is an equidigital number, since it uses as much as digits as its factorization.

155235422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77617713.

The product of its digits is 12000, while the sum is 29.

The square root of 155235422 is about 12459.3507856549. The cubic root of 155235422 is about 537.4403576872.

Adding to 155235422 its reverse (224532551), we get a palindrome (379767973).

The spelling of 155235422 in words is "one hundred fifty-five million, two hundred thirty-five thousand, four hundred twenty-two".