155235506 has 4 divisors (see below), whose sum is σ = 232853262. Its totient is φ = 77617752.

The previous prime is 155235467. The next prime is 155235527. The reversal of 155235506 is 605532551.

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

It can be written as a sum of positive squares in only one way, i.e., 146773225 + 8462281 = 12115^2 + 2909^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38808875 + ... + 38808878.

Almost surely, 2^155235506 is an apocalyptic number.

155235506 is a deficient number, since it is larger than the sum of its proper divisors (77617756).

155235506 is an equidigital number, since it uses as much as digits as its factorization.

155235506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77617755.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 155235506 is about 12459.3541566166. The cubic root of 155235506 is about 537.4404546260.

The spelling of 155235506 in words is "one hundred fifty-five million, two hundred thirty-five thousand, five hundred six".