52402213 has 8 divisors (see below), whose sum is σ = 53946648. Its totient is φ = 50878464.

The previous prime is 52402199. The next prime is 52402237. The reversal of 52402213 is 31220425.

52402213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16378209 + 36024004 = 4047^2 + 6002^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52402213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52402243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45 + ... + 10237.

It is an arithmetic number, because the mean of its divisors is an integer number (6743331).

Almost surely, 2^52402213 is an apocalyptic number.

52402213 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

52402213 is a deficient number, since it is larger than the sum of its proper divisors (1544435).

52402213 is a wasteful number, since it uses less digits than its factorization.

52402213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 52402213 is about 7238.9372838836. The cubic root of 52402213 is about 374.2109941206.

Adding to 52402213 its reverse (31220425), we get a palindrome (83622638).

The spelling of 52402213 in words is "fifty-two million, four hundred two thousand, two hundred thirteen".