155423235 has 32 divisors (see below), whose sum is σ = 273457152. Its totient is φ = 74753280.

The previous prime is 155423221. The next prime is 155423237. The reversal of 155423235 is 532324551.

It is not a de Polignac number, because 155423235 - 2¹¹ = 155421187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155423237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17247 + ... + 24663.

It is an arithmetic number, because the mean of its divisors is an integer number (8545536).

Almost surely, 2^155423235 is an apocalyptic number.

155423235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155423235 is a deficient number, since it is larger than the sum of its proper divisors (118033917).

155423235 is a wasteful number, since it uses less digits than its factorization.

155423235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563.

The product of its digits is 18000, while the sum is 30.

The square root of 155423235 is about 12466.8855372944. The cubic root of 155423235 is about 537.6570127197.

Adding to 155423235 its reverse (532324551), we get a palindrome (687747786).

The spelling of 155423235 in words is "one hundred fifty-five million, four hundred twenty-three thousand, two hundred thirty-five".