80775537 has 4 divisors (see below), whose sum is σ = 107700720. Its totient is φ = 53850356.

The previous prime is 80775533. The next prime is 80775559. The reversal of 80775537 is 73557708.

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 80775537 - 2² = 80775533 is a prime.

It is a super-3 number, since 3×80775537³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80775533) 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, 13462587 + ... + 13462592.

It is an arithmetic number, because the mean of its divisors is an integer number (26925180).

Almost surely, 2^80775537 is an apocalyptic number.

It is an amenable number.

80775537 is a deficient number, since it is larger than the sum of its proper divisors (26925183).

80775537 is a wasteful number, since it uses less digits than its factorization.

80775537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26925182.

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 80775537 is about 8987.5211821725. The cubic root of 80775537 is about 432.2748326198.

The spelling of 80775537 in words is "eighty million, seven hundred seventy-five thousand, five hundred thirty-seven".