52499905 has 4 divisors (see below), whose sum is σ = 62999892. Its totient is φ = 41999920.

The previous prime is 52499903. The next prime is 52499933. The reversal of 52499905 is 50999425.

It is a happy number.

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 38452401 + 14047504 = 6201^2 + 3748^2 .

It is not a de Polignac number, because 52499905 - 2¹ = 52499903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52499903) 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, 5249986 + ... + 5249995.

It is an arithmetic number, because the mean of its divisors is an integer number (15749973).

Almost surely, 2^52499905 is an apocalyptic number.

It is an amenable number.

52499905 is a deficient number, since it is larger than the sum of its proper divisors (10499987).

52499905 is a wasteful number, since it uses less digits than its factorization.

52499905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10499986.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 52499905 is about 7245.6818174689. The cubic root of 52499905 is about 374.4433935059.

The spelling of 52499905 in words is "fifty-two million, four hundred ninety-nine thousand, nine hundred five".