155061505 has 12 divisors (see below), whose sum is σ = 197665020. Its totient is φ = 116751104.

The previous prime is 155061503. The next prime is 155061509. The reversal of 155061505 is 505160551.

It can be written as a sum of positive squares in 6 ways, for example, as 283024 + 154778481 = 532^2 + 12441^2 .

It is not a de Polignac number, because 155061505 - 2¹ = 155061503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155061503) 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 11 ways as a sum of consecutive naturals, for example, 52210 + ... + 55099.

It is an arithmetic number, because the mean of its divisors is an integer number (16472085).

Almost surely, 2^155061505 is an apocalyptic number.

It is an amenable number.

155061505 is a deficient number, since it is larger than the sum of its proper divisors (42603515).

155061505 is a wasteful number, since it uses less digits than its factorization.

155061505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107348 (or 107331 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 155061505 is about 12452.3694532406. The cubic root of 155061505 is about 537.2395767456.

The spelling of 155061505 in words is "one hundred fifty-five million, sixty-one thousand, five hundred five".