51102022 has 4 divisors (see below), whose sum is σ = 76653036. Its totient is φ = 25551010.

The previous prime is 51101989. The next prime is 51102049. The reversal of 51102022 is 22020115.

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

It is a super-2 number, since 2×51102022² = 5222833304976968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51101993 and 51102011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775504 + ... + 12775507.

It is an arithmetic number, because the mean of its divisors is an integer number (19163259).

Almost surely, 2^51102022 is an apocalyptic number.

51102022 is a deficient number, since it is larger than the sum of its proper divisors (25551014).

51102022 is a wasteful number, since it uses less digits than its factorization.

51102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25551013.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 51102022 is about 7148.5678285934. The cubic root of 51102022 is about 371.0900941945.

Adding to 51102022 its reverse (22020115), we get a palindrome (73122137).

The spelling of 51102022 in words is "fifty-one million, one hundred two thousand, twenty-two".