52238739509 has 4 divisors (see below), whose sum is σ = 56987715840. Its totient is φ = 47489763180.

The previous prime is 52238739473. The next prime is 52238739523. The reversal of 52238739509 is 90593783225.

52238739509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52238739509 - 2⁸ = 52238739253 is a prime.

It is a super-2 number, since 2×52238739509² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52238739529) 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, 2374488149 + ... + 2374488170.

It is an arithmetic number, because the mean of its divisors is an integer number (14246928960).

Almost surely, 2^52238739509 is an apocalyptic number.

It is an amenable number.

52238739509 is a deficient number, since it is larger than the sum of its proper divisors (4748976331).

52238739509 is a wasteful number, since it uses less digits than its factorization.

52238739509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748976330.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 52238739509 in words is "fifty-two billion, two hundred thirty-eight million, seven hundred thirty-nine thousand, five hundred nine".