75854981 has 8 divisors (see below), whose sum is σ = 78586200. Its totient is φ = 73131520.

The previous prime is 75854971. The next prime is 75855023. The reversal of 75854981 is 18945857.

It can be written as a sum of positive squares in 4 ways, for example, as 1188100 + 74666881 = 1090^2 + 8641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75854981 - 2⁶ = 75854917 is a prime.

It is a super-2 number, since 2×75854981² = 11507956285020722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75854971) 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 7 ways as a sum of consecutive naturals, for example, 24065 + ... + 27033.

It is an arithmetic number, because the mean of its divisors is an integer number (9823275).

Almost surely, 2^75854981 is an apocalyptic number.

It is an amenable number.

75854981 is a deficient number, since it is larger than the sum of its proper divisors (2731219).

75854981 is a wasteful number, since it uses less digits than its factorization.

75854981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3879.

The product of its digits is 403200, while the sum is 47.

The square root of 75854981 is about 8709.4765055082. The cubic root of 75854981 is about 423.3127680643.

The spelling of 75854981 in words is "seventy-five million, eight hundred fifty-four thousand, nine hundred eighty-one".