155210045 has 8 divisors (see below), whose sum is σ = 188803896. Its totient is φ = 122466816.

The previous prime is 155209987. The next prime is 155210057. The reversal of 155210045 is 540012551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54789604 + 100420441 = 7402^2 + 10021^2 .

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 155210045 - 2¹² = 155205949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155210045.

It is a congruent number.

It is an unprimeable number.

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, 212252 + ... + 212981.

It is an arithmetic number, because the mean of its divisors is an integer number (23600487).

Almost surely, 2^155210045 is an apocalyptic number.

It is an amenable number.

155210045 is a deficient number, since it is larger than the sum of its proper divisors (33593851).

155210045 is an equidigital number, since it uses as much as digits as its factorization.

155210045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425311.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 155210045 is about 12458.3323522854. The cubic root of 155210045 is about 537.4110701981.

Adding to 155210045 its reverse (540012551), we get a palindrome (695222596).

The spelling of 155210045 in words is "one hundred fifty-five million, two hundred ten thousand, forty-five".