51270849 has 24 divisors (see below), whose sum is σ = 84839040. Its totient is φ = 29227968.

The previous prime is 51270839. The next prime is 51270851. The reversal of 51270849 is 94807215.

It is not a de Polignac number, because 51270849 - 2²³ = 42882241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51270809) 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 23 ways as a sum of consecutive naturals, for example, 38212 + ... + 39530.

It is an arithmetic number, because the mean of its divisors is an integer number (3534960).

Almost surely, 2^51270849 is an apocalyptic number.

It is an amenable number.

51270849 is a deficient number, since it is larger than the sum of its proper divisors (33568191).

51270849 is a wasteful number, since it uses less digits than its factorization.

51270849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 51270849 is about 7160.3665408972. The cubic root of 51270849 is about 371.4983047925.

The spelling of 51270849 in words is "fifty-one million, two hundred seventy thousand, eight hundred forty-nine".