155233066 has 4 divisors (see below), whose sum is σ = 232849602. Its totient is φ = 77616532.

The previous prime is 155233063. The next prime is 155233109. The reversal of 155233066 is 660332551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660332551 = 6959 ⋅94889.

It can be written as a sum of positive squares in only one way, i.e., 125910841 + 29322225 = 11221^2 + 5415^2 .

It is not an unprimeable number, because it can be changed into a prime (155233063) by changing a digit.

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, 38808265 + ... + 38808268.

Almost surely, 2^155233066 is an apocalyptic number.

155233066 is a deficient number, since it is larger than the sum of its proper divisors (77616536).

155233066 is an equidigital number, since it uses as much as digits as its factorization.

155233066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77616535.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 155233066 is about 12459.2562378338. The cubic root of 155233066 is about 537.4376387719.

The spelling of 155233066 in words is "one hundred fifty-five million, two hundred thirty-three thousand, sixty-six".