51264327553 has 2 divisors, whose sum is σ = 51264327554. Its totient is φ = 51264327552.

The previous prime is 51264327529. The next prime is 51264327559. The reversal of 51264327553 is 35572346215.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43659266704 + 7605060849 = 208948^2 + 87207^2 .

It is a cyclic number.

It is not a de Polignac number, because 51264327553 - 2¹³ = 51264319361 is a prime.

It is a super-2 number, since 2×51264327553² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51264327559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25632163776 + 25632163777.

It is an arithmetic number, because the mean of its divisors is an integer number (25632163777).

Almost surely, 2^51264327553 is an apocalyptic number.

It is an amenable number.

51264327553 is a deficient number, since it is larger than the sum of its proper divisors (1).

51264327553 is an equidigital number, since it uses as much as digits as its factorization.

51264327553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 43.

The spelling of 51264327553 in words is "fifty-one billion, two hundred sixty-four million, three hundred twenty-seven thousand, five hundred fifty-three".