51690583 has 8 divisors (see below), whose sum is σ = 62184320. Its totient is φ = 41974200.

The previous prime is 51690581. The next prime is 51690589. The reversal of 51690583 is 38509615.

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

It is a cyclic number.

It is not a de Polignac number, because 51690583 - 2¹ = 51690581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51690581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194193 + ... + 194458.

It is an arithmetic number, because the mean of its divisors is an integer number (7773040).

Almost surely, 2^51690583 is an apocalyptic number.

51690583 is a deficient number, since it is larger than the sum of its proper divisors (10493737).

51690583 is a wasteful number, since it uses less digits than its factorization.

51690583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388677.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 51690583 is about 7189.6163319053. The cubic root of 51690583 is about 372.5093203680.

The spelling of 51690583 in words is "fifty-one million, six hundred ninety thousand, five hundred eighty-three".