51269385 has 16 divisors (see below), whose sum is σ = 82137600. Its totient is φ = 27308160.

The previous prime is 51269357. The next prime is 51269401. The reversal of 51269385 is 58396215.

It is not a de Polignac number, because 51269385 - 2⁶ = 51269321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13141 + ... + 16589.

It is an arithmetic number, because the mean of its divisors is an integer number (5133600).

Almost surely, 2^51269385 is an apocalyptic number.

It is an amenable number.

51269385 is a deficient number, since it is larger than the sum of its proper divisors (30868215).

51269385 is a wasteful number, since it uses less digits than its factorization.

51269385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448.

The product of its digits is 64800, while the sum is 39.

The square root of 51269385 is about 7160.2643107640. The cubic root of 51269385 is about 371.4947688086.

The spelling of 51269385 in words is "fifty-one million, two hundred sixty-nine thousand, three hundred eighty-five".