51446020 has 48 divisors (see below), whose sum is σ = 110694528. Its totient is φ = 20079360.

The previous prime is 51445993. The next prime is 51446023. The reversal of 51446020 is 2064415.

It is a junction number, because it is equal to n+sod(n) for n = 51445982 and 51446000.

It is not an unprimeable number, because it can be changed into a prime (51446023) 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, 243715 + ... + 243925.

It is an arithmetic number, because the mean of its divisors is an integer number (2306136).

Almost surely, 2^51446020 is an apocalyptic number.

It is an amenable number.

51446020 is an abundant number, since it is smaller than the sum of its proper divisors (59248508).

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

51446020 is a wasteful number, since it uses less digits than its factorization.

51446020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 51446020 is about 7172.5880963569. The cubic root of 51446020 is about 371.9209085333.

The spelling of 51446020 in words is "fifty-one million, four hundred forty-six thousand, twenty".