51124450 has 24 divisors (see below), whose sum is σ = 102407508. Its totient is φ = 18876480.

The previous prime is 51124429. The next prime is 51124471. The reversal of 51124450 is 5442115.

It is an interprime number because it is at equal distance from previous prime (51124429) and next prime (51124471).

It can be written as a sum of positive squares in 6 ways, for example, as 21650409 + 29474041 = 4653^2 + 5429^2 .

It is a super-2 number, since 2×51124450² = 5227418775605000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38677 + ... + 39976.

Almost surely, 2^51124450 is an apocalyptic number.

51124450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51124450 is an abundant number, since it is smaller than the sum of its proper divisors (51283058).

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

51124450 is a wasteful number, since it uses less digits than its factorization.

51124450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78678 (or 78673 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51124450 is about 7150.1363623360. The cubic root of 51124450 is about 371.1443750952.

Adding to 51124450 its reverse (5442115), we get a palindrome (56566565).

The spelling of 51124450 in words is "fifty-one million, one hundred twenty-four thousand, four hundred fifty".