92138531 has 4 divisors (see below), whose sum is σ = 92163000. Its totient is φ = 92114064.

The previous prime is 92138509. The next prime is 92138533. The reversal of 92138531 is 13583129.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13583129 = 7 ⋅1940447.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-92138531 is a prime.

It is a super-2 number, since 2×92138531² = 16979017789675922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (92138533) 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, 5261 + ... + 14558.

It is an arithmetic number, because the mean of its divisors is an integer number (23040750).

Almost surely, 2^92138531 is an apocalyptic number.

92138531 is a deficient number, since it is larger than the sum of its proper divisors (24469).

92138531 is a wasteful number, since it uses less digits than its factorization.

92138531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24468.

The product of its digits is 6480, while the sum is 32.

The square root of 92138531 is about 9598.8817577882. The cubic root of 92138531 is about 451.6622163082.

The spelling of 92138531 in words is "ninety-two million, one hundred thirty-eight thousand, five hundred thirty-one".