51202650253 has 8 divisors (see below), whose sum is σ = 51784687800. Its totient is φ = 50620762368.

The previous prime is 51202650173. The next prime is 51202650259. The reversal of 51202650253 is 35205620215.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1784471049 + 49418179204 = 42243^2 + 222302^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51202650253 is a prime.

It is a super-2 number, since 2×51202650253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51202650259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742443 + ... + 808471.

It is an arithmetic number, because the mean of its divisors is an integer number (6473085975).

Almost surely, 2^51202650253 is an apocalyptic number.

It is an amenable number.

51202650253 is a deficient number, since it is larger than the sum of its proper divisors (582037547).

51202650253 is an equidigital number, since it uses as much as digits as its factorization.

51202650253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74831.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 51202650253 in words is "fifty-one billion, two hundred two million, six hundred fifty thousand, two hundred fifty-three".