75961081 has 4 divisors (see below), whose sum is σ = 86812672. Its totient is φ = 65109492.

The previous prime is 75961079. The next prime is 75961147. The reversal of 75961081 is 18016957.

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 not a de Polignac number, because 75961081 - 2¹ = 75961079 is a prime.

It is a super-2 number, since 2×75961081² = 11540171653377122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75961081.

It is not an unprimeable number, because it can be changed into a prime (75961001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5425785 + ... + 5425798.

It is an arithmetic number, because the mean of its divisors is an integer number (21703168).

Almost surely, 2^75961081 is an apocalyptic number.

It is an amenable number.

75961081 is a deficient number, since it is larger than the sum of its proper divisors (10851591).

75961081 is a wasteful number, since it uses less digits than its factorization.

75961081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10851590.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 75961081 is about 8715.5654435039. The cubic root of 75961081 is about 423.5100416859.

The spelling of 75961081 in words is "seventy-five million, nine hundred sixty-one thousand, eighty-one".