101792921 has 4 divisors (see below), whose sum is σ = 102118452. Its totient is φ = 101467392.

The previous prime is 101792909. The next prime is 101792927. The reversal of 101792921 is 129297101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1792921 + 100000000 = 1339^2 + 10000^2 .

It is a cyclic number.

It is not a de Polignac number, because 101792921 - 2¹⁸ = 101530777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101792927) 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, 162296 + ... + 162921.

It is an arithmetic number, because the mean of its divisors is an integer number (25529613).

Almost surely, 2^101792921 is an apocalyptic number.

It is an amenable number.

101792921 is a deficient number, since it is larger than the sum of its proper divisors (325531).

101792921 is an equidigital number, since it uses as much as digits as its factorization.

101792921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325530.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 101792921 is about 10089.2477915849. The cubic root of 101792921 is about 466.9164686972.

The spelling of 101792921 in words is "one hundred one million, seven hundred ninety-two thousand, nine hundred twenty-one".