155243435 has 4 divisors (see below), whose sum is σ = 186292128. Its totient is φ = 124194744.

The previous prime is 155243423. The next prime is 155243483. The reversal of 155243435 is 534342551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 534342551 = 1873 ⋅285287.

It is a cyclic number.

It is not a de Polignac number, because 155243435 - 2⁴ = 155243419 is a prime.

It is a super-2 number, since 2×155243435² = 48201048221198450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15524339 + ... + 15524348.

It is an arithmetic number, because the mean of its divisors is an integer number (46573032).

Almost surely, 2^155243435 is an apocalyptic number.

155243435 is a deficient number, since it is larger than the sum of its proper divisors (31048693).

155243435 is an equidigital number, since it uses as much as digits as its factorization.

155243435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31048692.

The product of its digits is 36000, while the sum is 32.

The square root of 155243435 is about 12459.6723472168. The cubic root of 155243435 is about 537.4496047938.

Adding to 155243435 its reverse (534342551), we get a palindrome (689585986).

The spelling of 155243435 in words is "one hundred fifty-five million, two hundred forty-three thousand, four hundred thirty-five".