155432105 has 24 divisors (see below), whose sum is σ = 200704392. Its totient is φ = 115155456.

The previous prime is 155432099. The next prime is 155432119. The reversal of 155432105 is 501234551.

It can be written as a sum of positive squares in 4 ways, for example, as 71453209 + 83978896 = 8453^2 + 9164^2 .

It is not a de Polignac number, because 155432105 - 2⁸ = 155431849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530339 + ... + 530631.

It is an arithmetic number, because the mean of its divisors is an integer number (8362683).

Almost surely, 2^155432105 is an apocalyptic number.

It is an amenable number.

155432105 is a deficient number, since it is larger than the sum of its proper divisors (45272287).

155432105 is an equidigital number, since it uses as much as digits as its factorization.

155432105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155432105 is about 12467.2412746365. The cubic root of 155432105 is about 537.6672405491.

Adding to 155432105 its reverse (501234551), we get a palindrome (656666656).

The spelling of 155432105 in words is "one hundred fifty-five million, four hundred thirty-two thousand, one hundred five".