801553155 has 32 divisors (see below), whose sum is σ = 1383117120. Its totient is φ = 394045440.

The previous prime is 801553139. The next prime is 801553199. The reversal of 801553155 is 551355108.

It is not a de Polignac number, because 801553155 - 2⁴ = 801553139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155215 + ... + 160295.

It is an arithmetic number, because the mean of its divisors is an integer number (43222410).

Almost surely, 2^801553155 is an apocalyptic number.

801553155 is a deficient number, since it is larger than the sum of its proper divisors (581563965).

801553155 is a wasteful number, since it uses less digits than its factorization.

801553155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911.

The product of its (nonzero) digits is 15000, while the sum is 33.

The square root of 801553155 is about 28311.7140950526. The cubic root of 801553155 is about 928.9181372702.

The spelling of 801553155 in words is "eight hundred one million, five hundred fifty-three thousand, one hundred fifty-five".