51131606 has 8 divisors (see below), whose sum is σ = 76728000. Its totient is φ = 25555608.

The previous prime is 51131593. The next prime is 51131621. The reversal of 51131606 is 60613115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51131606² = 5228882264278472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6020 + ... + 11768.

It is an arithmetic number, because the mean of its divisors is an integer number (9591000).

Almost surely, 2^51131606 is an apocalyptic number.

51131606 is a deficient number, since it is larger than the sum of its proper divisors (25596394).

51131606 is a wasteful number, since it uses less digits than its factorization.

51131606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10198.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51131606 is about 7150.6367548632. The cubic root of 51131606 is about 371.1616909147.

The spelling of 51131606 in words is "fifty-one million, one hundred thirty-one thousand, six hundred six".