51223150 has 24 divisors (see below), whose sum is σ = 103937544. Its totient is φ = 18626400.

The previous prime is 51223127. The next prime is 51223189. The reversal of 51223150 is 5132215.

It is a super-2 number, since 2×51223150² = 5247622191845000, which contains 22 as substring.

It is a congruent number.

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, 46017 + ... + 47116.

It is an arithmetic number, because the mean of its divisors is an integer number (4330731).

Almost surely, 2^51223150 is an apocalyptic number.

51223150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51223150 is an abundant number, since it is smaller than the sum of its proper divisors (52714394).

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

51223150 is a wasteful number, since it uses less digits than its factorization.

51223150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93156 (or 93151 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51223150 is about 7157.0350006130. The cubic root of 51223150 is about 371.3830632467.

Adding to 51223150 its reverse (5132215), we get a palindrome (56355365).

The spelling of 51223150 in words is "fifty-one million, two hundred twenty-three thousand, one hundred fifty".