51573953801 has 2 divisors, whose sum is σ = 51573953802. Its totient is φ = 51573953800.

The previous prime is 51573953789. The next prime is 51573953831. The reversal of 51573953801 is 10835937515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48190786576 + 3383167225 = 219524^2 + 58165^2 .

It is a cyclic number.

It is not a de Polignac number, because 51573953801 - 2²² = 51569759497 is a prime.

It is a super-4 number, since 4×51573953801⁴ (a number of 44 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (51573953831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25786976900 + 25786976901.

It is an arithmetic number, because the mean of its divisors is an integer number (25786976901).

Almost surely, 2^51573953801 is an apocalyptic number.

It is an amenable number.

51573953801 is a deficient number, since it is larger than the sum of its proper divisors (1).

51573953801 is an equidigital number, since it uses as much as digits as its factorization.

51573953801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 47.

The spelling of 51573953801 in words is "fifty-one billion, five hundred seventy-three million, nine hundred fifty-three thousand, eight hundred one".