51630476 has 6 divisors (see below), whose sum is σ = 90353340. Its totient is φ = 25815236.

The previous prime is 51630473. The next prime is 51630539. The reversal of 51630476 is 67403615.

It is not an unprimeable number, because it can be changed into a prime (51630473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6453806 + ... + 6453813.

It is an arithmetic number, because the mean of its divisors is an integer number (15058890).

Almost surely, 2^51630476 is an apocalyptic number.

It is an amenable number.

51630476 is a deficient number, since it is larger than the sum of its proper divisors (38722864).

51630476 is a wasteful number, since it uses less digits than its factorization.

51630476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907623 (or 12907621 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 51630476 is about 7185.4349903120. The cubic root of 51630476 is about 372.3648768947.

The spelling of 51630476 in words is "fifty-one million, six hundred thirty thousand, four hundred seventy-six".