80531537 has 4 divisors (see below), whose sum is σ = 81665856. Its totient is φ = 79397220.

The previous prime is 80531527. The next prime is 80531543. The reversal of 80531537 is 73513508.

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 80531537 - 2²⁰ = 79482961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80531527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567053 + ... + 567194.

It is an arithmetic number, because the mean of its divisors is an integer number (20416464).

Almost surely, 2^80531537 is an apocalyptic number.

It is an amenable number.

80531537 is a deficient number, since it is larger than the sum of its proper divisors (1134319).

80531537 is a wasteful number, since it uses less digits than its factorization.

80531537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134318.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 80531537 is about 8973.9365386657. The cubic root of 80531537 is about 431.8391337061.

The spelling of 80531537 in words is "eighty million, five hundred thirty-one thousand, five hundred thirty-seven".