51532930 has 16 divisors (see below), whose sum is σ = 93243384. Its totient is φ = 20505600.

The previous prime is 51532909. The next prime is 51532937. The reversal of 51532930 is 3923515.

It can be written as a sum of positive squares in 4 ways, for example, as 22080601 + 29452329 = 4699^2 + 5427^2 .

It is not an unprimeable number, because it can be changed into a prime (51532937) 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, 11421 + ... + 15280.

Almost surely, 2^51532930 is an apocalyptic number.

51532930 is a deficient number, since it is larger than the sum of its proper divisors (41710454).

51532930 is a wasteful number, since it uses less digits than its factorization.

51532930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26901.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 51532930 is about 7178.6440223764. The cubic root of 51532930 is about 372.1302247662.

The spelling of 51532930 in words is "fifty-one million, five hundred thirty-two thousand, nine hundred thirty".