80100520 has 32 divisors (see below), whose sum is σ = 180510120. Its totient is φ = 31989760.

The previous prime is 80100509. The next prime is 80100539. The reversal of 80100520 is 2500108.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67010596 + 13089924 = 8186^2 + 3618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 80100494 and 80100503.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34104 + ... + 36376.

Almost surely, 2^80100520 is an apocalyptic number.

It is an amenable number.

80100520 is an abundant number, since it is smaller than the sum of its proper divisors (100409600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80100520 is a wasteful number, since it uses less digits than its factorization.

80100520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3161 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 80100520 is about 8949.8893847913. The cubic root of 80100520 is about 431.0673322849.

Adding to 80100520 its reverse (2500108), we get a palindrome (82600628).

It can be divided in two parts, 801005 and 20, that added together give a square (801025 = 895²).

The spelling of 80100520 in words is "eighty million, one hundred thousand, five hundred twenty".