51325120053 has 24 divisors (see below), whose sum is σ = 79306515288. Its totient is φ = 31871987712.

The previous prime is 51325120043. The next prime is 51325120079. The reversal of 51325120053 is 35002152315.

It is a happy number.

51325120053 is a `hidden beast` number, since 513 + 25 + 120 + 0 + 5 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 24094179729 + 27230940324 = 155223^2 + 165018^2 .

It is not a de Polignac number, because 51325120053 - 2²¹ = 51323022901 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51325119999 and 51325120026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51325120003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1714326 + ... + 1744007.

It is an arithmetic number, because the mean of its divisors is an integer number (3304438137).

Almost surely, 2^51325120053 is an apocalyptic number.

It is an amenable number.

51325120053 is a deficient number, since it is larger than the sum of its proper divisors (27981395235).

51325120053 is a wasteful number, since it uses less digits than its factorization.

51325120053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458453 (or 3458450 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 51325120053 its reverse (35002152315), we get a palindrome (86327272368).

The spelling of 51325120053 in words is "fifty-one billion, three hundred twenty-five million, one hundred twenty thousand, fifty-three".