51479511 has 4 divisors (see below), whose sum is σ = 68639352. Its totient is φ = 34319672.

The previous prime is 51479453. The next prime is 51479513. The reversal of 51479511 is 11597415.

51479511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51479511 - 2¹⁴ = 51463127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51479513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8579916 + ... + 8579921.

It is an arithmetic number, because the mean of its divisors is an integer number (17159838).

Almost surely, 2^51479511 is an apocalyptic number.

51479511 is a deficient number, since it is larger than the sum of its proper divisors (17159841).

51479511 is a wasteful number, since it uses less digits than its factorization.

51479511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17159840.

The product of its digits is 6300, while the sum is 33.

The square root of 51479511 is about 7174.9223689180. The cubic root of 51479511 is about 372.0015969986.

The spelling of 51479511 in words is "fifty-one million, four hundred seventy-nine thousand, five hundred eleven".