51248278 has 32 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 23063040.

The previous prime is 51248273. The next prime is 51248279. The reversal of 51248278 is 87284215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51248273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54226 + ... + 55162.

It is an arithmetic number, because the mean of its divisors is an integer number (2659230).

Almost surely, 2^51248278 is an apocalyptic number.

51248278 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51248278 is a deficient number, since it is larger than the sum of its proper divisors (33847082).

51248278 is a wasteful number, since it uses less digits than its factorization.

51248278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its digits is 35840, while the sum is 37.

The square root of 51248278 is about 7158.7902609310. The cubic root of 51248278 is about 371.4437818088.

The spelling of 51248278 in words is "fifty-one million, two hundred forty-eight thousand, two hundred seventy-eight".