52399019 has 4 divisors (see below), whose sum is σ = 52503696. Its totient is φ = 52294344.

The previous prime is 52399013. The next prime is 52399051. The reversal of 52399019 is 91099325.

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 52399019 - 2⁸ = 52398763 is a prime.

It is a super-2 number, since 2×52399019² = 5491314384324722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52399013) 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, 51584 + ... + 52589.

It is an arithmetic number, because the mean of its divisors is an integer number (13125924).

Almost surely, 2^52399019 is an apocalyptic number.

52399019 is a deficient number, since it is larger than the sum of its proper divisors (104677).

52399019 is a wasteful number, since it uses less digits than its factorization.

52399019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104676.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 52399019 is about 7238.7166680289. The cubic root of 52399019 is about 374.2033910435.

The spelling of 52399019 in words is "fifty-two million, three hundred ninety-nine thousand, nineteen".