51620366 has 8 divisors (see below), whose sum is σ = 88492080. Its totient is φ = 22123008.

The previous prime is 51620341. The next prime is 51620369. The reversal of 51620366 is 66302615.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51620369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843571 + ... + 1843598.

It is an arithmetic number, because the mean of its divisors is an integer number (11061510).

Almost surely, 2^51620366 is an apocalyptic number.

51620366 is a deficient number, since it is larger than the sum of its proper divisors (36871714).

51620366 is a wasteful number, since it uses less digits than its factorization.

51620366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687178.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 51620366 is about 7184.7314494002. The cubic root of 51620366 is about 372.3405704841.

The spelling of 51620366 in words is "fifty-one million, six hundred twenty thousand, three hundred sixty-six".