51774451601 has 4 divisors (see below), whose sum is σ = 52308208932. Its totient is φ = 51240694272.

The previous prime is 51774451583. The next prime is 51774451639. The reversal of 51774451601 is 10615447715.

It is a happy number.

It is a Cunningham number, because it is equal to 227540²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23248930576 + 28525521025 = 152476^2 + 168895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51774451601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51774450601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266878520 + ... + 266878713.

It is an arithmetic number, because the mean of its divisors is an integer number (13077052233).

Almost surely, 2^51774451601 is an apocalyptic number.

It is an amenable number.

51774451601 is a deficient number, since it is larger than the sum of its proper divisors (533757331).

51774451601 is an equidigital number, since it uses as much as digits as its factorization.

51774451601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533757330.

The product of its (nonzero) digits is 117600, while the sum is 41.

The spelling of 51774451601 in words is "fifty-one billion, seven hundred seventy-four million, four hundred fifty-one thousand, six hundred one".