51693602 has 16 divisors (see below), whose sum is σ = 80387640. Its totient is φ = 24901632.

The previous prime is 51693599. The next prime is 51693637. The reversal of 51693602 is 20639615.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40208281 + 11485321 = 6341^2 + 3389^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44258 + ... + 45410.

Almost surely, 2^51693602 is an apocalyptic number.

51693602 is a deficient number, since it is larger than the sum of its proper divisors (28694038).

51693602 is a wasteful number, since it uses less digits than its factorization.

51693602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 51693602 is about 7189.8262844105. The cubic root of 51693602 is about 372.5165723900.

The spelling of 51693602 in words is "fifty-one million, six hundred ninety-three thousand, six hundred two".