155233505 has 8 divisors (see below), whose sum is σ = 212891712. Its totient is φ = 106445808.

The previous prime is 155233501. The next prime is 155233541. The reversal of 155233505 is 505332551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155233505 - 2² = 155233501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155233501) 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 in 7 ways as a sum of consecutive naturals, for example, 2217587 + ... + 2217656.

It is an arithmetic number, because the mean of its divisors is an integer number (26611464).

Almost surely, 2^155233505 is an apocalyptic number.

It is an amenable number.

155233505 is a deficient number, since it is larger than the sum of its proper divisors (57658207).

155233505 is an equidigital number, since it uses as much as digits as its factorization.

155233505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435255.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 155233505 is about 12459.2738552453. The cubic root of 155233505 is about 537.4381453970.

The spelling of 155233505 in words is "one hundred fifty-five million, two hundred thirty-three thousand, five hundred five".