51030224 has 20 divisors (see below), whose sum is σ = 112995744. Its totient is φ = 21870048.

The previous prime is 51030223. The next prime is 51030233. The reversal of 51030224 is 42203015.

51030224 = T₂ + T₃ + ... + T₆₇₃.

It is a super-2 number, since 2×51030224² = 5208167522980352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51030223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227702 + ... + 227925.

Almost surely, 2^51030224 is an apocalyptic number.

It is an amenable number.

51030224 is an abundant number, since it is smaller than the sum of its proper divisors (61965520).

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

51030224 is a wasteful number, since it uses less digits than its factorization.

51030224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455642 (or 455636 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51030224 is about 7143.5442183835. The cubic root of 51030224 is about 370.9162197027.

Adding to 51030224 its reverse (42203015), we get a palindrome (93233239).

The spelling of 51030224 in words is "fifty-one million, thirty thousand, two hundred twenty-four".