155055515 has 8 divisors (see below), whose sum is σ = 186200208. Its totient is φ = 123955360.

The previous prime is 155055499. The next prime is 155055541. The reversal of 155055515 is 515550551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155055515 - 2⁴ = 155055499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2921 + ... + 17850.

It is an arithmetic number, because the mean of its divisors is an integer number (23275026).

Almost surely, 2^155055515 is an apocalyptic number.

155055515 is a deficient number, since it is larger than the sum of its proper divisors (31144693).

155055515 is a wasteful number, since it uses less digits than its factorization.

155055515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22269.

The product of its (nonzero) digits is 15625, while the sum is 32.

The square root of 155055515 is about 12452.1289344433. The cubic root of 155055515 is about 537.2326588315.

The spelling of 155055515 in words is "one hundred fifty-five million, fifty-five thousand, five hundred fifteen".