51385011 has 8 divisors (see below), whose sum is σ = 70723584. Its totient is φ = 33151560.

The previous prime is 51384989. The next prime is 51385021. The reversal of 51385011 is 11058315.

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

It is not a de Polignac number, because 51385011 - 2⁶ = 51384947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51385021) 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, 276171 + ... + 276356.

It is an arithmetic number, because the mean of its divisors is an integer number (8840448).

Almost surely, 2^51385011 is an apocalyptic number.

51385011 is a deficient number, since it is larger than the sum of its proper divisors (19338573).

51385011 is a wasteful number, since it uses less digits than its factorization.

51385011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552561.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 51385011 is about 7168.3339068433. Note that the first 3 decimals coincide. The cubic root of 51385011 is about 371.7738320567.

The spelling of 51385011 in words is "fifty-one million, three hundred eighty-five thousand, eleven".