51357449 has 8 divisors (see below), whose sum is σ = 60336192. Its totient is φ = 43097040.

The previous prime is 51357431. The next prime is 51357473. The reversal of 51357449 is 94475315.

51357449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51357449 - 2¹² = 51353353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51357409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179429 + ... + 179714.

It is an arithmetic number, because the mean of its divisors is an integer number (7542024).

Almost surely, 2^51357449 is an apocalyptic number.

It is an amenable number.

51357449 is a deficient number, since it is larger than the sum of its proper divisors (8978743).

51357449 is a wasteful number, since it uses less digits than its factorization.

51357449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359167.

The product of its digits is 75600, while the sum is 38.

The square root of 51357449 is about 7166.4111659882. The cubic root of 51357449 is about 371.7073492259.

The spelling of 51357449 in words is "fifty-one million, three hundred fifty-seven thousand, four hundred forty-nine".