155232601 has 8 divisors (see below), whose sum is σ = 162021384. Its totient is φ = 148586880.

The previous prime is 155232569. The next prime is 155232611. The reversal of 155232601 is 106232551.

It can be written as a sum of positive squares in 4 ways, for example, as 20115225 + 135117376 = 4485^2 + 11624^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 155232601 - 2⁵ = 155232569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155232611) 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, 33546 + ... + 37891.

It is an arithmetic number, because the mean of its divisors is an integer number (20252673).

Almost surely, 2^155232601 is an apocalyptic number.

It is an amenable number.

155232601 is a deficient number, since it is larger than the sum of its proper divisors (6788783).

155232601 is an equidigital number, since it uses as much as digits as its factorization.

155232601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71531.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 155232601 is about 12459.2375769948. The cubic root of 155232601 is about 537.4371021407.

Subtracting from 155232601 its reverse (106232551), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 155232601 in words is "one hundred fifty-five million, two hundred thirty-two thousand, six hundred one".