52391224 has 32 divisors (see below), whose sum is σ = 100246320. Its totient is φ = 25664256.

The previous prime is 52391221. The next prime is 52391237. The reversal of 52391224 is 42219325.

It is a junction number, because it is equal to n+sod(n) for n = 52391192 and 52391201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52391221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165114 + ... + 165430.

Almost surely, 2^52391224 is an apocalyptic number.

It is an amenable number.

52391224 is a deficient number, since it is larger than the sum of its proper divisors (47855096).

52391224 is a wasteful number, since it uses less digits than its factorization.

52391224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 675 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 52391224 is about 7238.1782238351. The cubic root of 52391224 is about 374.1848343342.

The spelling of 52391224 in words is "fifty-two million, three hundred ninety-one thousand, two hundred twenty-four".