51031252 has 12 divisors (see below), whose sum is σ = 90095796. Its totient is φ = 25289600.

The previous prime is 51031241. The next prime is 51031261. The reversal of 51031252 is 25213015.

It can be written as a sum of positive squares in 2 ways, for example, as 24960016 + 26071236 = 4996^2 + 5106^2 .

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, 55999 + ... + 56902.

It is an arithmetic number, because the mean of its divisors is an integer number (7507983).

Almost surely, 2^51031252 is an apocalyptic number.

It is an amenable number.

51031252 is a deficient number, since it is larger than the sum of its proper divisors (39064544).

51031252 is a wasteful number, since it uses less digits than its factorization.

51031252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113018 (or 113016 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51031252 is about 7143.6161710999. The cubic root of 51031252 is about 370.9187103790.

Adding to 51031252 its reverse (25213015), we get a palindrome (76244267).

The spelling of 51031252 in words is "fifty-one million, thirty-one thousand, two hundred fifty-two".