51008385 has 32 divisors (see below), whose sum is σ = 85034880. Its totient is φ = 26085888.

The previous prime is 51008371. The next prime is 51008429. The reversal of 51008385 is 58380015.

It is a happy number.

It is not a de Polignac number, because 51008385 - 2⁷ = 51008257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39886 + ... + 41144.

It is an arithmetic number, because the mean of its divisors is an integer number (2657340).

Almost surely, 2^51008385 is an apocalyptic number.

It is an amenable number.

51008385 is a deficient number, since it is larger than the sum of its proper divisors (34026495).

51008385 is a wasteful number, since it uses less digits than its factorization.

51008385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 51008385 is about 7142.0154718399. The cubic root of 51008385 is about 370.8632994623.

The spelling of 51008385 in words is "fifty-one million, eight thousand, three hundred eighty-five".