52199779 has 4 divisors (see below), whose sum is σ = 52828776. Its totient is φ = 51570784.

The previous prime is 52199761. The next prime is 52199789. The reversal of 52199779 is 97799125.

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

It is a cyclic number.

It is not a de Polignac number, because 52199779 - 2⁵ = 52199747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52199789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314374 + ... + 314539.

It is an arithmetic number, because the mean of its divisors is an integer number (13207194).

Almost surely, 2^52199779 is an apocalyptic number.

52199779 is a deficient number, since it is larger than the sum of its proper divisors (628997).

52199779 is an equidigital number, since it uses as much as digits as its factorization.

52199779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628996.

The product of its digits is 357210, while the sum is 49.

The square root of 52199779 is about 7224.9414530500. The cubic root of 52199779 is about 373.7285031427.

The spelling of 52199779 in words is "fifty-two million, one hundred ninety-nine thousand, seven hundred seventy-nine".