93087481 has 4 divisors (see below), whose sum is σ = 93137572. Its totient is φ = 93037392.

The previous prime is 93087457. The next prime is 93087487. The reversal of 93087481 is 18478039.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18478039 = 23 ⋅803393.

It can be written as a sum of positive squares in 2 ways, for example, as 81288256 + 11799225 = 9016^2 + 3435^2 .

It is a cyclic number.

It is not a de Polignac number, because 93087481 - 2⁷ = 93087353 is a prime.

It is a super-2 number, since 2×93087481² = 17330558237850722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93087487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22146 + ... + 26011.

It is an arithmetic number, because the mean of its divisors is an integer number (23284393).

Almost surely, 2^93087481 is an apocalyptic number.

It is an amenable number.

93087481 is a deficient number, since it is larger than the sum of its proper divisors (50091).

93087481 is a wasteful number, since it uses less digits than its factorization.

93087481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50090.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 93087481 is about 9648.1853734264. The cubic root of 93087481 is about 453.2075046660.

The spelling of 93087481 in words is "ninety-three million, eighty-seven thousand, four hundred eighty-one".