52739985 has 16 divisors (see below), whose sum is σ = 86665536. Its totient is φ = 27367488.

The previous prime is 52739963. The next prime is 52739987. The reversal of 52739985 is 58993725.

It is a happy number.

It is not a de Polignac number, because 52739985 - 2⁷ = 52739857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52739987) 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, 46959 + ... + 48068.

It is an arithmetic number, because the mean of its divisors is an integer number (5416596).

Almost surely, 2^52739985 is an apocalyptic number.

It is an amenable number.

52739985 is a deficient number, since it is larger than the sum of its proper divisors (33925551).

52739985 is a wasteful number, since it uses less digits than its factorization.

52739985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95072.

The product of its digits is 680400, while the sum is 48.

The square root of 52739985 is about 7262.2300294056. The cubic root of 52739985 is about 375.0132973063.

The spelling of 52739985 in words is "fifty-two million, seven hundred thirty-nine thousand, nine hundred eighty-five".