80357121 has 24 divisors (see below), whose sum is σ = 126420840. Its totient is φ = 48888576.

The previous prime is 80357119. The next prime is 80357129. The reversal of 80357121 is 12175308.

It can be written as a sum of positive squares in 4 ways, for example, as 57600 + 80299521 = 240^2 + 8961^2 .

It is not a de Polignac number, because 80357121 - 2¹ = 80357119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80357129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6555 + ... + 14271.

It is an arithmetic number, because the mean of its divisors is an integer number (5267535).

Almost surely, 2^80357121 is an apocalyptic number.

It is an amenable number.

80357121 is a deficient number, since it is larger than the sum of its proper divisors (46063719).

80357121 is a wasteful number, since it uses less digits than its factorization.

80357121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825 (or 7822 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 80357121 is about 8964.2133508747. The cubic root of 80357121 is about 431.5271478735.

The spelling of 80357121 in words is "eighty million, three hundred fifty-seven thousand, one hundred twenty-one".