51261469 has 8 divisors (see below), whose sum is σ = 58755200. Its totient is φ = 43810416.

The previous prime is 51261451. The next prime is 51261481. The reversal of 51261469 is 96416215.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51261469 is a prime.

It is a super-2 number, since 2×51261469² = 5255476408075922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51241469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8049 + ... + 12934.

It is an arithmetic number, because the mean of its divisors is an integer number (7344400).

Almost surely, 2^51261469 is an apocalyptic number.

It is an amenable number.

51261469 is a deficient number, since it is larger than the sum of its proper divisors (7493731).

51261469 is a wasteful number, since it uses less digits than its factorization.

51261469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21339.

The product of its digits is 12960, while the sum is 34.

The square root of 51261469 is about 7159.7115165347. The cubic root of 51261469 is about 371.4756482102.

The spelling of 51261469 in words is "fifty-one million, two hundred sixty-one thousand, four hundred sixty-nine".