51400268 has 12 divisors (see below), whose sum is σ = 90094032. Its totient is φ = 25659120.

The previous prime is 51400253. The next prime is 51400273. The reversal of 51400268 is 86200415.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7343 + ... + 12518.

It is an arithmetic number, because the mean of its divisors is an integer number (7507836).

Almost surely, 2^51400268 is an apocalyptic number.

It is an amenable number.

51400268 is a deficient number, since it is larger than the sum of its proper divisors (38693764).

51400268 is a wasteful number, since it uses less digits than its factorization.

51400268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20512 (or 20510 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 51400268 is about 7169.3980221494. The cubic root of 51400268 is about 371.8106235383.

The spelling of 51400268 in words is "fifty-one million, four hundred thousand, two hundred sixty-eight".