51069471 has 8 divisors (see below), whose sum is σ = 68954880. Its totient is φ = 33615192.

The previous prime is 51069467. The next prime is 51069503. The reversal of 51069471 is 17496015.

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

It is not a de Polignac number, because 51069471 - 2² = 51069467 is a prime.

It is a super-3 number, since 3×51069471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51069451) 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, 107505 + ... + 107978.

It is an arithmetic number, because the mean of its divisors is an integer number (8619360).

Almost surely, 2^51069471 is an apocalyptic number.

51069471 is a deficient number, since it is larger than the sum of its proper divisors (17885409).

51069471 is a wasteful number, since it uses less digits than its factorization.

51069471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215565.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 51069471 is about 7146.2907161688. The cubic root of 51069471 is about 371.0112850538.

The spelling of 51069471 in words is "fifty-one million, sixty-nine thousand, four hundred seventy-one".