52102019 has 4 divisors (see below), whose sum is σ = 52349160. Its totient is φ = 51854880.

The previous prime is 52102013. The next prime is 52102049. The reversal of 52102019 is 91020125.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52102019 is a prime.

It is a super-2 number, since 2×52102019² = 5429240767752722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52102013) 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, 123254 + ... + 123675.

It is an arithmetic number, because the mean of its divisors is an integer number (13087290).

Almost surely, 2^52102019 is an apocalyptic number.

52102019 is a deficient number, since it is larger than the sum of its proper divisors (247141).

52102019 is a wasteful number, since it uses less digits than its factorization.

52102019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247140.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 52102019 is about 7218.1728297402. The cubic root of 52102019 is about 373.4950504921.

The spelling of 52102019 in words is "fifty-two million, one hundred two thousand, nineteen".