51224064 has 40 divisors (see below), whose sum is σ = 136468200. Its totient is φ = 17074176.

The previous prime is 51224029. The next prime is 51224081. The reversal of 51224064 is 46042215.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15139 + ... + 18210.

It is an arithmetic number, because the mean of its divisors is an integer number (3411705).

Almost surely, 2^51224064 is an apocalyptic number.

It is an amenable number.

51224064 is an abundant number, since it is smaller than the sum of its proper divisors (85244136).

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

51224064 is an equidigital number, since it uses as much as digits as its factorization.

51224064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33370 (or 33354 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51224064 is about 7157.0988535859. The cubic root of 51224064 is about 371.3852721574.

Adding to 51224064 its reverse (46042215), we get a palindrome (97266279).

It can be divided in two parts, 51 and 224064, that added together give a triangular number (224115 = T₆₆₉).

The spelling of 51224064 in words is "fifty-one million, two hundred twenty-four thousand, sixty-four".