51004301261 has 8 divisors (see below), whose sum is σ = 52834490400. Its totient is φ = 49178873520.

The previous prime is 51004301251. The next prime is 51004301281. The reversal of 51004301261 is 16210340015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51004301261 - 2¹⁸ = 51004039117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51004301251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168535 + ... + 1211396.

It is an arithmetic number, because the mean of its divisors is an integer number (6604311300).

Almost surely, 2^51004301261 is an apocalyptic number.

It is an amenable number.

51004301261 is a deficient number, since it is larger than the sum of its proper divisors (1830189139).

51004301261 is a wasteful number, since it uses less digits than its factorization.

51004301261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380699.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 51004301261 its reverse (16210340015), we get a palindrome (67214641276).

The spelling of 51004301261 in words is "fifty-one billion, four million, three hundred one thousand, two hundred sixty-one".