155201330 has 32 divisors (see below), whose sum is σ = 306005040. Its totient is φ = 56412160.

The previous prime is 155201317. The next prime is 155201339. The reversal of 155201330 is 33102551.

It can be written as a sum of positive squares in 8 ways, for example, as 50282281 + 104919049 = 7091^2 + 10243^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155201339) 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 15 ways as a sum of consecutive naturals, for example, 10811 + ... + 20670.

Almost surely, 2^155201330 is an apocalyptic number.

155201330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155201330 is a deficient number, since it is larger than the sum of its proper divisors (150803710).

155201330 is a wasteful number, since it uses less digits than its factorization.

155201330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31534.

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

The square root of 155201330 is about 12457.9825814616. The cubic root of 155201330 is about 537.4010115168.

Adding to 155201330 its reverse (33102551), we get a palindrome (188303881).

The spelling of 155201330 in words is "one hundred fifty-five million, two hundred one thousand, three hundred thirty".