53599729 has 4 divisors (see below), whose sum is σ = 55930176. Its totient is φ = 51269284.

The previous prime is 53599723. The next prime is 53599747. The reversal of 53599729 is 92799535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53599729 - 2¹³ = 53591537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53599723) 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, 1165189 + ... + 1165234.

It is an arithmetic number, because the mean of its divisors is an integer number (13982544).

Almost surely, 2^53599729 is an apocalyptic number.

It is an amenable number.

53599729 is a deficient number, since it is larger than the sum of its proper divisors (2330447).

53599729 is a wasteful number, since it uses less digits than its factorization.

53599729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330446.

The product of its digits is 765450, while the sum is 49.

The square root of 53599729 is about 7321.1835791763. The cubic root of 53599729 is about 377.0400907676.

The spelling of 53599729 in words is "fifty-three million, five hundred ninety-nine thousand, seven hundred twenty-nine".