51040451 has 16 divisors (see below), whose sum is σ = 64274688. Its totient is φ = 39372000.

The previous prime is 51040433. The next prime is 51040471. The reversal of 51040451 is 15404015.

It is a cyclic number.

It is not a de Polignac number, because 51040451 - 2¹⁰ = 51039427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51040421) 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 15 ways as a sum of consecutive naturals, for example, 4496 + ... + 11058.

It is an arithmetic number, because the mean of its divisors is an integer number (4017168).

Almost surely, 2^51040451 is an apocalyptic number.

51040451 is a deficient number, since it is larger than the sum of its proper divisors (13234237).

51040451 is a wasteful number, since it uses less digits than its factorization.

51040451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6682.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51040451 is about 7144.2600036673. The cubic root of 51040451 is about 370.9409965669.

Adding to 51040451 its reverse (15404015), we get a palindrome (66444466).

The spelling of 51040451 in words is "fifty-one million, forty thousand, four hundred fifty-one".