51001543223 has 16 divisors (see below), whose sum is σ = 53490662400. Its totient is φ = 48535701984.

The previous prime is 51001543217. The next prime is 51001543247. The reversal of 51001543223 is 32234510015.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51001543223 - 2⁸ = 51001542967 is a prime.

It is a super-2 number, since 2×51001543223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51001543192 and 51001543201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51001543823) 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, 3709640 + ... + 3723362.

It is an arithmetic number, because the mean of its divisors is an integer number (3343166400).

Almost surely, 2^51001543223 is an apocalyptic number.

51001543223 is a deficient number, since it is larger than the sum of its proper divisors (2489119177).

51001543223 is a wasteful number, since it uses less digits than its factorization.

51001543223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14558.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 51001543223 in words is "fifty-one billion, one million, five hundred forty-three thousand, two hundred twenty-three".