52100905 has 4 divisors (see below), whose sum is σ = 62521092. Its totient is φ = 41680720.

The previous prime is 52100899. The next prime is 52100977. The reversal of 52100905 is 50900125.

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 36820624 + 15280281 = 6068^2 + 3909^2 .

It is not a de Polignac number, because 52100905 - 2⁷ = 52100777 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5210086 + ... + 5210095.

It is an arithmetic number, because the mean of its divisors is an integer number (15630273).

Almost surely, 2^52100905 is an apocalyptic number.

It is an amenable number.

52100905 is a deficient number, since it is larger than the sum of its proper divisors (10420187).

52100905 is a wasteful number, since it uses less digits than its factorization.

52100905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10420186.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 52100905 is about 7218.0956629848. The cubic root of 52100905 is about 373.4923885579.

The spelling of 52100905 in words is "fifty-two million, one hundred thousand, nine hundred five".