100992506 has 4 divisors (see below), whose sum is σ = 151488762. Its totient is φ = 50496252.

The previous prime is 100992503. The next prime is 100992511. The reversal of 100992506 is 605299001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605299001 = 13921 ⋅43481.

It can be written as a sum of positive squares in only one way, i.e., 74046025 + 26946481 = 8605^2 + 5191^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100992503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25248125 + ... + 25248128.

Almost surely, 2^100992506 is an apocalyptic number.

100992506 is a deficient number, since it is larger than the sum of its proper divisors (50496256).

100992506 is an equidigital number, since it uses as much as digits as its factorization.

100992506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50496255.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 100992506 is about 10049.5027737695. The cubic root of 100992506 is about 465.6894324660.

The spelling of 100992506 in words is "one hundred million, nine hundred ninety-two thousand, five hundred six".