51290449 has 8 divisors (see below), whose sum is σ = 58775360. Its totient is φ = 43844976.

The previous prime is 51290441. The next prime is 51290453. The reversal of 51290449 is 94409215.

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

It is not a de Polignac number, because 51290449 - 2³ = 51290441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51290441) 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, 7014 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (7346920).

Almost surely, 2^51290449 is an apocalyptic number.

It is an amenable number.

51290449 is a deficient number, since it is larger than the sum of its proper divisors (7484911).

51290449 is a wasteful number, since it uses less digits than its factorization.

51290449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19719.

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

The square root of 51290449 is about 7161.7350551385. The cubic root of 51290449 is about 371.5456379865.

The spelling of 51290449 in words is "fifty-one million, two hundred ninety thousand, four hundred forty-nine".