51669441 has 8 divisors (see below), whose sum is σ = 76547360. Its totient is φ = 34446276.

The previous prime is 51669433. The next prime is 51669461. The reversal of 51669441 is 14496615.

It is not a de Polignac number, because 51669441 - 2³ = 51669433 is a prime.

It is a super-2 number, since 2×51669441² = 5339462266504962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51669396 and 51669405.

It is not an unprimeable number, because it can be changed into a prime (51669421) 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, 956815 + ... + 956868.

It is an arithmetic number, because the mean of its divisors is an integer number (9568420).

Almost surely, 2^51669441 is an apocalyptic number.

It is an amenable number.

51669441 is a deficient number, since it is larger than the sum of its proper divisors (24877919).

51669441 is a wasteful number, since it uses less digits than its factorization.

51669441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913692 (or 1913686 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 51669441 is about 7188.1458666335. The cubic root of 51669441 is about 372.4585266800.

The spelling of 51669441 in words is "fifty-one million, six hundred sixty-nine thousand, four hundred forty-one".