51223152 has 40 divisors (see below), whose sum is σ = 133022736. Its totient is φ = 16984576.

The previous prime is 51223127. The next prime is 51223189. The reversal of 51223152 is 25132215.

It is a super-2 number, since 2×51223152² = 5247622601630208, 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 7 ways as a sum of consecutive naturals, for example, 6748 + ... + 12164.

Almost surely, 2^51223152 is an apocalyptic number.

It is an amenable number.

51223152 is an abundant number, since it is smaller than the sum of its proper divisors (81799584).

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

51223152 is a wasteful number, since it uses less digits than its factorization.

51223152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5619 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 51223152 is about 7157.0351403357. The cubic root of 51223152 is about 371.3830680802.

Adding to 51223152 its reverse (25132215), we get a palindrome (76355367).

The spelling of 51223152 in words is "fifty-one million, two hundred twenty-three thousand, one hundred fifty-two".