51478422 has 16 divisors (see below), whose sum is σ = 106507440. Its totient is φ = 16567712.

The previous prime is 51478421. The next prime is 51478459. The reversal of 51478422 is 22487415.

It is a super-2 number, since 2×51478422² = 5300055863220168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51478421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147753 + ... + 148100.

It is an arithmetic number, because the mean of its divisors is an integer number (6656715).

Almost surely, 2^51478422 is an apocalyptic number.

51478422 is an abundant number, since it is smaller than the sum of its proper divisors (55029018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51478422 is a wasteful number, since it uses less digits than its factorization.

51478422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295887.

The product of its digits is 17920, while the sum is 33.

The square root of 51478422 is about 7174.8464791938. The cubic root of 51478422 is about 371.9989738670.

The spelling of 51478422 in words is "fifty-one million, four hundred seventy-eight thousand, four hundred twenty-two".