51542224123 has 4 divisors (see below), whose sum is σ = 55507010608. Its totient is φ = 47577437640.

The previous prime is 51542224087. The next prime is 51542224159. The reversal of 51542224123 is 32142224515.

It is a happy number.

51542224123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32142224515 = 5 ⋅6428444903.

It is an interprime number because it is at equal distance from previous prime (51542224087) and next prime (51542224159).

It is a cyclic number.

It is not a de Polignac number, because 51542224123 - 2⁹ = 51542223611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51543224123) 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, 1982393223 + ... + 1982393248.

It is an arithmetic number, because the mean of its divisors is an integer number (13876752652).

Almost surely, 2^51542224123 is an apocalyptic number.

51542224123 is a deficient number, since it is larger than the sum of its proper divisors (3964786485).

51542224123 is a wasteful number, since it uses less digits than its factorization.

51542224123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964786484.

The product of its digits is 19200, while the sum is 31.

Adding to 51542224123 its reverse (32142224515), we get a palindrome (83684448638).

The spelling of 51542224123 in words is "fifty-one billion, five hundred forty-two million, two hundred twenty-four thousand, one hundred twenty-three".