51224352 has 48 divisors (see below), whose sum is σ = 137602080. Its totient is φ = 16676352.

The previous prime is 51224279. The next prime is 51224359. The reversal of 51224352 is 25342215.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (51224359) 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, 2077 + ... + 10332.

It is an arithmetic number, because the mean of its divisors is an integer number (2866710).

Almost surely, 2^51224352 is an apocalyptic number.

It is an amenable number.

51224352 is an abundant number, since it is smaller than the sum of its proper divisors (86377728).

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

51224352 is a wasteful number, since it uses less digits than its factorization.

51224352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12465 (or 12457 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 51224352 is about 7157.1189734418. The cubic root of 51224352 is about 371.3859681764.

Adding to 51224352 its reverse (25342215), we get a palindrome (76566567).

The spelling of 51224352 in words is "fifty-one million, two hundred twenty-four thousand, three hundred fifty-two".