92521993 has 4 divisors (see below), whose sum is σ = 92585620. Its totient is φ = 92458368.

The previous prime is 92521987. The next prime is 92522029. The reversal of 92521993 is 39912529.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39912529 = 37 ⋅1078717.

It can be written as a sum of positive squares in 2 ways, for example, as 49449024 + 43072969 = 7032^2 + 6563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-92521993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (92521903) 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, 29580 + ... + 32557.

It is an arithmetic number, because the mean of its divisors is an integer number (23146405).

Almost surely, 2^92521993 is an apocalyptic number.

It is an amenable number.

92521993 is a deficient number, since it is larger than the sum of its proper divisors (63627).

92521993 is a wasteful number, since it uses less digits than its factorization.

92521993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63626.

The product of its digits is 43740, while the sum is 40.

The square root of 92521993 is about 9618.8353245078. The cubic root of 92521993 is about 452.2879247964.

The spelling of 92521993 in words is "ninety-two million, five hundred twenty-one thousand, nine hundred ninety-three".