51272385 has 8 divisors (see below), whose sum is σ = 82035840. Its totient is φ = 27345264.

The previous prime is 51272369. The next prime is 51272399. The reversal of 51272385 is 58327215.

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

It is not a de Polignac number, because 51272385 - 2⁴ = 51272369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1709065 + ... + 1709094.

It is an arithmetic number, because the mean of its divisors is an integer number (10254480).

Almost surely, 2^51272385 is an apocalyptic number.

It is an amenable number.

51272385 is a deficient number, since it is larger than the sum of its proper divisors (30763455).

51272385 is a wasteful number, since it uses less digits than its factorization.

51272385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418167.

The product of its digits is 16800, while the sum is 33.

The square root of 51272385 is about 7160.4737971729. The cubic root of 51272385 is about 371.5020146049.

The spelling of 51272385 in words is "fifty-one million, two hundred seventy-two thousand, three hundred eighty-five".