53250639121 has 3 divisors (see below), whose sum is σ = 53250869883. Its totient is φ = 53250408360.

The previous prime is 53250639109. The next prime is 53250639133. The reversal of 53250639121 is 12193605235.

The square root of 53250639121 is 230761.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (53250639109) and next prime (53250639133).

It can be written as a sum of positive squares in only one way, i.e., 52917941521 + 332697600 = 230039^2 + 18240^2 .

It is not a de Polignac number, because 53250639121 - 2²⁹ = 52713768209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53250639721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 115381 + ... + 346141.

It is an arithmetic number, because the mean of its divisors is an integer number (17750289961).

Almost surely, 2^53250639121 is an apocalyptic number.

53250639121 is the 230761-st square number.

53250639121 is the 115381-st centered octagonal number.

It is an amenable number.

53250639121 is a deficient number, since it is larger than the sum of its proper divisors (230762).

53250639121 is an frugal number, since it uses more digits than its factorization.

53250639121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461522 (or 230761 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 53250639121 in words is "fifty-three billion, two hundred fifty million, six hundred thirty-nine thousand, one hundred twenty-one".