56820299 has 4 divisors (see below), whose sum is σ = 57030240. Its totient is φ = 56610360.

The previous prime is 56820287. The next prime is 56820311. The reversal of 56820299 is 99202865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99202865 = 5 ⋅19840573.

It is an interprime number because it is at equal distance from previous prime (56820287) and next prime (56820311).

It is a cyclic number.

It is not a de Polignac number, because 56820299 - 2¹² = 56816203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56820899) 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, 104564 + ... + 105105.

It is an arithmetic number, because the mean of its divisors is an integer number (14257560).

Almost surely, 2^56820299 is an apocalyptic number.

56820299 is a deficient number, since it is larger than the sum of its proper divisors (209941).

56820299 is a wasteful number, since it uses less digits than its factorization.

56820299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209940.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 56820299 is about 7537.9240510899. The cubic root of 56820299 is about 384.4452549133.

The spelling of 56820299 in words is "fifty-six million, eight hundred twenty thousand, two hundred ninety-nine".