80520121 has 4 divisors (see below), whose sum is σ = 87840144. Its totient is φ = 73200100.

The previous prime is 80520101. The next prime is 80520127. The reversal of 80520121 is 12102508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80520121 - 2⁷ = 80519993 is a prime.

It is a super-3 number, since 3×80520121³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80520127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3659995 + ... + 3660016.

It is an arithmetic number, because the mean of its divisors is an integer number (21960036).

Almost surely, 2^80520121 is an apocalyptic number.

It is an amenable number.

80520121 is a deficient number, since it is larger than the sum of its proper divisors (7320023).

80520121 is a wasteful number, since it uses less digits than its factorization.

80520121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320022.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 80520121 is about 8973.3004518962. The cubic root of 80520121 is about 431.8187271727.

Adding to 80520121 its reverse (12102508), we get a palindrome (92622629).

The spelling of 80520121 in words is "eighty million, five hundred twenty thousand, one hundred twenty-one".