51258398 has 16 divisors (see below), whose sum is σ = 80510976. Its totient is φ = 24429240.

The previous prime is 51258397. The next prime is 51258401. The reversal of 51258398 is 89385215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51258397) 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, 12515 + ... + 16097.

It is an arithmetic number, because the mean of its divisors is an integer number (5031936).

Almost surely, 2^51258398 is an apocalyptic number.

51258398 is a deficient number, since it is larger than the sum of its proper divisors (29252578).

51258398 is a wasteful number, since it uses less digits than its factorization.

51258398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919.

The product of its digits is 86400, while the sum is 41.

The square root of 51258398 is about 7159.4970493743. The cubic root of 51258398 is about 371.4682298736.

The spelling of 51258398 in words is "fifty-one million, two hundred fifty-eight thousand, three hundred ninety-eight".