51394224 has 40 divisors (see below), whose sum is σ = 151736320. Its totient is φ = 14683968.

The previous prime is 51394201. The next prime is 51394243. The reversal of 51394224 is 42249315.

It is a junction number, because it is equal to n+sod(n) for n = 51394191 and 51394200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76144 + ... + 76815.

It is an arithmetic number, because the mean of its divisors is an integer number (3793408).

Almost surely, 2^51394224 is an apocalyptic number.

It is an amenable number.

51394224 is an abundant number, since it is smaller than the sum of its proper divisors (100342096).

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

51394224 is a wasteful number, since it uses less digits than its factorization.

51394224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152977 (or 152971 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 51394224 is about 7168.9764959860. The cubic root of 51394224 is about 371.7960496098.

The spelling of 51394224 in words is "fifty-one million, three hundred ninety-four thousand, two hundred twenty-four".