52309999 has 6 divisors (see below), whose sum is σ = 60850464. Its totient is φ = 44837100.

The previous prime is 52309991. The next prime is 52310023. The reversal of 52309999 is 99990325.

It is a happy number.

It is not a de Polignac number, because 52309999 - 2³ = 52309991 is a prime.

It is a Duffinian number.

52309999 is a modest number, since divided by 9999 gives 5230 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52309991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 533727 + ... + 533824.

It is an arithmetic number, because the mean of its divisors is an integer number (10141744).

Almost surely, 2^52309999 is an apocalyptic number.

52309999 is a deficient number, since it is larger than the sum of its proper divisors (8540465).

52309999 is a wasteful number, since it uses less digits than its factorization.

52309999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067565 (or 1067558 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 46.

The square root of 52309999 is about 7232.5651742656. The cubic root of 52309999 is about 373.9913611967.

The spelling of 52309999 in words is "fifty-two million, three hundred nine thousand, nine hundred ninety-nine".