92138521 has 16 divisors (see below), whose sum is σ = 100675008. Its totient is φ = 83980800.

The previous prime is 92138509. The next prime is 92138533. The reversal of 92138521 is 12583129.

It is an interprime number because it is at equal distance from previous prime (92138509) and next prime (92138533).

It is a 8-Lehmer number, since φ(92138521) divides (92138521-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 92138521 - 2¹⁵ = 92105753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (92133521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113206 + ... + 114016.

It is an arithmetic number, because the mean of its divisors is an integer number (6292188).

Almost surely, 2^92138521 is an apocalyptic number.

It is an amenable number.

92138521 is a deficient number, since it is larger than the sum of its proper divisors (8536487).

92138521 is a wasteful number, since it uses less digits than its factorization.

92138521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its digits is 4320, while the sum is 31.

The square root of 92138521 is about 9598.8812368942. The cubic root of 92138521 is about 451.6621999682.

The spelling of 92138521 in words is "ninety-two million, one hundred thirty-eight thousand, five hundred twenty-one".