80853531 has 36 divisors (see below), whose sum is σ = 125263656. Its totient is φ = 46347840.

The previous prime is 80853529. The next prime is 80853571. The reversal of 80853531 is 13535808.

It is not a de Polignac number, because 80853531 - 2¹ = 80853529 is a prime.

It is a super-2 number, since 2×80853531² = 13074586950335922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 80853492 and 80853501.

It is not an unprimeable number, because it can be changed into a prime (80853511) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 130735 + ... + 131351.

It is an arithmetic number, because the mean of its divisors is an integer number (3479546).

Almost surely, 2^80853531 is an apocalyptic number.

80853531 is a deficient number, since it is larger than the sum of its proper divisors (44410125).

80853531 is a wasteful number, since it uses less digits than its factorization.

80853531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 80853531 is about 8991.8591514770. The cubic root of 80853531 is about 432.4139176245.

The spelling of 80853531 in words is "eighty million, eight hundred fifty-three thousand, five hundred thirty-one".