53206756469 has 4 divisors (see below), whose sum is σ = 53733556140. Its totient is φ = 52679956800.

The previous prime is 53206756403. The next prime is 53206756483. The reversal of 53206756469 is 96465760235.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30506814244 + 22699942225 = 174662^2 + 150665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53206756469 is a prime.

It is a super-2 number, since 2×53206756469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53206756469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53206756069) 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, 263399684 + ... + 263399885.

It is an arithmetic number, because the mean of its divisors is an integer number (13433389035).

Almost surely, 2^53206756469 is an apocalyptic number.

It is an amenable number.

53206756469 is a deficient number, since it is larger than the sum of its proper divisors (526799671).

53206756469 is a wasteful number, since it uses less digits than its factorization.

53206756469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526799670.

The product of its (nonzero) digits is 8164800, while the sum is 53.

The spelling of 53206756469 in words is "fifty-three billion, two hundred six million, seven hundred fifty-six thousand, four hundred sixty-nine".