801755121 has 16 divisors (see below), whose sum is σ = 1083801600. Its totient is φ = 527122128.

The previous prime is 801755117. The next prime is 801755153. The reversal of 801755121 is 121557108.

It is not a de Polignac number, because 801755121 - 2² = 801755117 is a prime.

It is a super-2 number, since 2×801755121² = 1285622548099449282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (801755621) 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, 297040 + ... + 299726.

It is an arithmetic number, because the mean of its divisors is an integer number (67737600).

Almost surely, 2^801755121 is an apocalyptic number.

It is an amenable number.

801755121 is a deficient number, since it is larger than the sum of its proper divisors (282046479).

801755121 is a wasteful number, since it uses less digits than its factorization.

801755121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028.

The product of its (nonzero) digits is 2800, while the sum is 30.

The square root of 801755121 is about 28315.2806978847. The cubic root of 801755121 is about 928.9961500318.

The spelling of 801755121 in words is "eight hundred one million, seven hundred fifty-five thousand, one hundred twenty-one".