51879578 has 4 divisors (see below), whose sum is σ = 77819370. Its totient is φ = 25939788.

The previous prime is 51879539. The next prime is 51879599. The reversal of 51879578 is 87597815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 51595489 + 284089 = 7183^2 + 533^2 .

It is a super-2 number, since 2×51879578² = 5382981226916168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12969893 + ... + 12969896.

Almost surely, 2^51879578 is an apocalyptic number.

51879578 is a deficient number, since it is larger than the sum of its proper divisors (25939792).

51879578 is a wasteful number, since it uses less digits than its factorization.

51879578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25939791.

The product of its digits is 705600, while the sum is 50.

The square root of 51879578 is about 7202.7479478321. The cubic root of 51879578 is about 372.9627670454.

The spelling of 51879578 in words is "fifty-one million, eight hundred seventy-nine thousand, five hundred seventy-eight".