51605366 has 8 divisors (see below), whose sum is σ = 77581800. Its totient is φ = 25744768.

The previous prime is 51605341. The next prime is 51605371. The reversal of 51605366 is 66350615.

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

It is a super-2 number, since 2×51605366² = 5326227599987912, 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, 27836 + ... + 29631.

It is an arithmetic number, because the mean of its divisors is an integer number (9697725).

Almost surely, 2^51605366 is an apocalyptic number.

51605366 is a deficient number, since it is larger than the sum of its proper divisors (25976434).

51605366 is a wasteful number, since it uses less digits than its factorization.

51605366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57918.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 51605366 is about 7183.6874932029. The cubic root of 51605366 is about 372.3045017122.

The spelling of 51605366 in words is "fifty-one million, six hundred five thousand, three hundred sixty-six".