51478476 has 96 divisors (see below), whose sum is σ = 144764928. Its totient is φ = 13927680.

The previous prime is 51478459. The next prime is 51478477. The reversal of 51478476 is 67487415.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (51478477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137826 + ... + 138198.

It is an arithmetic number, because the mean of its divisors is an integer number (1507968).

Almost surely, 2^51478476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51478476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72382464).

51478476 is an abundant number, since it is smaller than the sum of its proper divisors (93286452).

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

51478476 is a wasteful number, since it uses less digits than its factorization.

51478476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 469 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 51478476 is about 7174.8502423396. The cubic root of 51478476 is about 371.9991039405. Note that the first 3 decimals are identical.

The spelling of 51478476 in words is "fifty-one million, four hundred seventy-eight thousand, four hundred seventy-six".