51240451154231 has 16 divisors (see below), whose sum is σ = 55144683648288. Its totient is φ = 47435136537600.

The previous prime is 51240451154173. The next prime is 51240451154267. The reversal of 51240451154231 is 13245115404215.

It is a cyclic number.

It is not a de Polignac number, because 51240451154231 - 2¹⁴ = 51240451137847 is a prime.

It is a super-2 number, since 2×51240451154231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51240451154831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102133811 + ... + 102634283.

It is an arithmetic number, because the mean of its divisors is an integer number (3446542728018).

Almost surely, 2^{51240451154231} is an apocalyptic number.

51240451154231 is a deficient number, since it is larger than the sum of its proper divisors (3904232494057).

51240451154231 is a wasteful number, since it uses less digits than its factorization.

51240451154231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599282.

The product of its (nonzero) digits is 96000, while the sum is 38.

Adding to 51240451154231 its reverse (13245115404215), we get a palindrome (64485566558446).

The spelling of 51240451154231 in words is "fifty-one trillion, two hundred forty billion, four hundred fifty-one million, one hundred fifty-four thousand, two hundred thirty-one".