51542424022 has 4 divisors (see below), whose sum is σ = 77313636036. Its totient is φ = 25771212010.

The previous prime is 51542423987. The next prime is 51542424029. The reversal of 51542424022 is 22042424515.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51542424029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12885606004 + ... + 12885606007.

It is an arithmetic number, because the mean of its divisors is an integer number (19328409009).

Almost surely, 2^51542424022 is an apocalyptic number.

51542424022 is a deficient number, since it is larger than the sum of its proper divisors (25771212014).

51542424022 is a wasteful number, since it uses less digits than its factorization.

51542424022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25771212013.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 51542424022 its reverse (22042424515), we get a palindrome (73584848537).

The spelling of 51542424022 in words is "fifty-one billion, five hundred forty-two million, four hundred twenty-four thousand, twenty-two".