51145469 has 8 divisors (see below), whose sum is σ = 54840960. Its totient is φ = 47526336.

The previous prime is 51145463. The next prime is 51145499. The reversal of 51145469 is 96454115.

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

It is a cyclic number.

It is not a de Polignac number, because 51145469 - 2⁴ = 51145453 is a prime.

It is a super-2 number, since 2×51145469² = 5231717998459922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51145463) 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, 17699 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (6855120).

Almost surely, 2^51145469 is an apocalyptic number.

It is an amenable number.

51145469 is a deficient number, since it is larger than the sum of its proper divisors (3695491).

51145469 is a wasteful number, since it uses less digits than its factorization.

51145469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38179.

The product of its digits is 21600, while the sum is 35.

The square root of 51145469 is about 7151.6060434003. The cubic root of 51145469 is about 371.1952314843.

The spelling of 51145469 in words is "fifty-one million, one hundred forty-five thousand, four hundred sixty-nine".