51292261321 has 16 divisors (see below), whose sum is σ = 60736857984. Its totient is φ = 42397979904.

The previous prime is 51292261309. The next prime is 51292261351. The reversal of 51292261321 is 12316229215.

It is not a de Polignac number, because 51292261321 - 2⁵ = 51292261289 is a prime.

It is a super-3 number, since 3×51292261321³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51292261301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847015 + ... + 905548.

It is an arithmetic number, because the mean of its divisors is an integer number (3796053624).

Almost surely, 2^51292261321 is an apocalyptic number.

It is an amenable number.

51292261321 is a deficient number, since it is larger than the sum of its proper divisors (9444596663).

51292261321 is a wasteful number, since it uses less digits than its factorization.

51292261321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752720.

The product of its digits is 12960, while the sum is 34.

The spelling of 51292261321 in words is "fifty-one billion, two hundred ninety-two million, two hundred sixty-one thousand, three hundred twenty-one".