51224943 has 48 divisors (see below), whose sum is σ = 87989760. Its totient is φ = 26208000.

The previous prime is 51224941. The next prime is 51224947. The reversal of 51224943 is 34942215.

It is not a de Polignac number, because 51224943 - 2¹ = 51224941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51224943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51224941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127543 + ... + 127943.

It is an arithmetic number, because the mean of its divisors is an integer number (1833120).

Almost surely, 2^51224943 is an apocalyptic number.

51224943 is a deficient number, since it is larger than the sum of its proper divisors (36764817).

51224943 is a wasteful number, since it uses less digits than its factorization.

51224943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 501 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 51224943 is about 7157.1602608856. The cubic root of 51224943 is about 371.3873964571.

The spelling of 51224943 in words is "fifty-one million, two hundred twenty-four thousand, nine hundred forty-three".