51503352 has 32 divisors (see below), whose sum is σ = 131500800. Its totient is φ = 16802144.

The previous prime is 51503327. The next prime is 51503359. The reversal of 51503352 is 25330515.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51503359) 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, 21702 + ... + 23957.

It is an arithmetic number, because the mean of its divisors is an integer number (4109400).

Almost surely, 2^51503352 is an apocalyptic number.

It is an amenable number.

51503352 is an abundant number, since it is smaller than the sum of its proper divisors (79997448).

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

51503352 is a wasteful number, since it uses less digits than its factorization.

51503352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45715 (or 45711 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 51503352 is about 7176.5835883100. The cubic root of 51503352 is about 372.0590148019.

Adding to 51503352 its reverse (25330515), we get a palindrome (76833867).

The spelling of 51503352 in words is "fifty-one million, five hundred three thousand, three hundred fifty-two".