155228315 has 32 divisors (see below), whose sum is σ = 211341312. Its totient is φ = 108432000.

The previous prime is 155228299. The next prime is 155228327. The reversal of 155228315 is 513822551.

It is not a de Polignac number, because 155228315 - 2⁴ = 155228299 is a prime.

It is a Duffinian 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 31 ways as a sum of consecutive naturals, for example, 308354 + ... + 308856.

It is an arithmetic number, because the mean of its divisors is an integer number (6604416).

Almost surely, 2^155228315 is an apocalyptic number.

155228315 is a deficient number, since it is larger than the sum of its proper divisors (56112997).

155228315 is a wasteful number, since it uses less digits than its factorization.

155228315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 12000, while the sum is 32.

The square root of 155228315 is about 12459.0655749137. The cubic root of 155228315 is about 537.4321558502.

The spelling of 155228315 in words is "one hundred fifty-five million, two hundred twenty-eight thousand, three hundred fifteen".