51264562451 has 4 divisors (see below), whose sum is σ = 52133453400. Its totient is φ = 50395671504.

The previous prime is 51264562439. The next prime is 51264562463. The reversal of 51264562451 is 15426546215.

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

It is an interprime number because it is at equal distance from previous prime (51264562439) and next prime (51264562463).

It is a cyclic number.

It is not a de Polignac number, because 51264562451 - 2¹⁰ = 51264561427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51264562399 and 51264562408.

It is not an unprimeable number, because it can be changed into a prime (51264562471) 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, 434445386 + ... + 434445503.

It is an arithmetic number, because the mean of its divisors is an integer number (13033363350).

Almost surely, 2^51264562451 is an apocalyptic number.

51264562451 is a deficient number, since it is larger than the sum of its proper divisors (868890949).

51264562451 is an equidigital number, since it uses as much as digits as its factorization.

51264562451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868890948.

The product of its digits is 288000, while the sum is 41.

The spelling of 51264562451 in words is "fifty-one billion, two hundred sixty-four million, five hundred sixty-two thousand, four hundred fifty-one".