80515155 has 16 divisors (see below), whose sum is σ = 147227904. Its totient is φ = 36806880.

The previous prime is 80515151. The next prime is 80515159. The reversal of 80515155 is 55151508.

It is an interprime number because it is at equal distance from previous prime (80515151) and next prime (80515159).

It is not a de Polignac number, because 80515155 - 2² = 80515151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80515151) 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 15 ways as a sum of consecutive naturals, for example, 383301 + ... + 383510.

It is an arithmetic number, because the mean of its divisors is an integer number (9201744).

Almost surely, 2^80515155 is an apocalyptic number.

80515155 is a deficient number, since it is larger than the sum of its proper divisors (66712749).

80515155 is a wasteful number, since it uses less digits than its factorization.

80515155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766826.

The product of its (nonzero) digits is 5000, while the sum is 30.

The square root of 80515155 is about 8973.0237378489. The cubic root of 80515155 is about 431.8098496571.

The spelling of 80515155 in words is "eighty million, five hundred fifteen thousand, one hundred fifty-five".