52647399 has 12 divisors (see below), whose sum is σ = 86910096. Its totient is φ = 30084192.

The previous prime is 52647389. The next prime is 52647407. The reversal of 52647399 is 99374625.

It is a happy number.

It is not a de Polignac number, because 52647399 - 2⁵ = 52647367 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52647349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417774 + ... + 417899.

It is an arithmetic number, because the mean of its divisors is an integer number (7242508).

Almost surely, 2^52647399 is an apocalyptic number.

52647399 is a deficient number, since it is larger than the sum of its proper divisors (34262697).

52647399 is a wasteful number, since it uses less digits than its factorization.

52647399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835686 (or 835683 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 52647399 is about 7255.8527410636. The cubic root of 52647399 is about 374.7937212183.

The spelling of 52647399 in words is "fifty-two million, six hundred forty-seven thousand, three hundred ninety-nine".