155233001 has 16 divisors (see below), whose sum is σ = 204923520. Its totient is φ = 113844480.

The previous prime is 155232997. The next prime is 155233007. The reversal of 155233001 is 100332551.

It is a cyclic number.

It is not a de Polignac number, because 155233001 - 2² = 155232997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155233007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57986 + ... + 60603.

It is an arithmetic number, because the mean of its divisors is an integer number (12807720).

Almost surely, 2^155233001 is an apocalyptic number.

155233001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155233001 is a deficient number, since it is larger than the sum of its proper divisors (49690519).

155233001 is a wasteful number, since it uses less digits than its factorization.

155233001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118624.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 155233001 is about 12459.2536293311. The cubic root of 155233001 is about 537.4375637590.

Subtracting from 155233001 its product of nonzero digits (450), we obtain a palindrome (155232551).

Adding to 155233001 its reverse (100332551), we get a palindrome (255565552).

The spelling of 155233001 in words is "one hundred fifty-five million, two hundred thirty-three thousand, one".