51409461 has 8 divisors (see below), whose sum is σ = 68891200. Its totient is φ = 34100352.

The previous prime is 51409451. The next prime is 51409469. The reversal of 51409461 is 16490415.

It is a happy number.

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

It is not a de Polignac number, because 51409461 - 2⁷ = 51409333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51409469) 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, 42460 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (8611400).

Almost surely, 2^51409461 is an apocalyptic number.

It is an amenable number.

51409461 is a deficient number, since it is larger than the sum of its proper divisors (17481739).

51409461 is a wasteful number, since it uses less digits than its factorization.

51409461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86315.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51409461 is about 7170.0391212322. The cubic root of 51409461 is about 371.8327884766.

Adding to 51409461 its reverse (16490415), we get a palindrome (67899876).

The spelling of 51409461 in words is "fifty-one million, four hundred nine thousand, four hundred sixty-one".