155505315 has 16 divisors (see below), whose sum is σ = 284352768. Its totient is φ = 71088096.

The previous prime is 155505283. The next prime is 155505319. The reversal of 155505315 is 513505551.

It is not a de Polignac number, because 155505315 - 2⁵ = 155505283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155505319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740397 + ... + 740606.

It is an arithmetic number, because the mean of its divisors is an integer number (17772048).

Almost surely, 2^155505315 is an apocalyptic number.

155505315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155505315 is a deficient number, since it is larger than the sum of its proper divisors (128847453).

155505315 is a wasteful number, since it uses less digits than its factorization.

155505315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481018.

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 155505315 is about 12470.1770236032. The cubic root of 155505315 is about 537.7516427607.

The spelling of 155505315 in words is "one hundred fifty-five million, five hundred five thousand, three hundred fifteen".