52309989 has 16 divisors (see below), whose sum is σ = 79997440. Its totient is φ = 33747840.

The previous prime is 52309987. The next prime is 52309991. The reversal of 52309989 is 98990325.

It is an interprime number because it is at equal distance from previous prime (52309987) and next prime (52309991).

It is not a de Polignac number, because 52309989 - 2¹ = 52309987 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 (52309987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30412 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (4999840).

Almost surely, 2^52309989 is an apocalyptic number.

It is an amenable number.

52309989 is a deficient number, since it is larger than the sum of its proper divisors (27687451).

52309989 is a wasteful number, since it uses less digits than its factorization.

52309989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62537 (or 62531 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 52309989 is about 7232.5644829479. The cubic root of 52309989 is about 373.9913373650.

The spelling of 52309989 in words is "fifty-two million, three hundred nine thousand, nine hundred eighty-nine".