51226470 has 96 divisors (see below), whose sum is σ = 145173600. Its totient is φ = 12483072.

The previous prime is 51226421. The next prime is 51226481. The reversal of 51226470 is 7462215.

51226470 is a `hidden beast` number, since 5 + 12 + 2 + 647 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49074 + ... + 50106.

It is an arithmetic number, because the mean of its divisors is an integer number (1512225).

Almost surely, 2^51226470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51226470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72586800).

51226470 is an abundant number, since it is smaller than the sum of its proper divisors (93947130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51226470 is a wasteful number, since it uses less digits than its factorization.

51226470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1091 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 51226470 is about 7157.2669364779. The cubic root of 51226470 is about 371.3910867356.

Adding to 51226470 its reverse (7462215), we get a palindrome (58688685).

The spelling of 51226470 in words is "fifty-one million, two hundred twenty-six thousand, four hundred seventy".