51825131 has 2 divisors, whose sum is σ = 51825132. Its totient is φ = 51825130.

The previous prime is 51825127. The next prime is 51825181. The reversal of 51825131 is 13152815.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51825131 - 2² = 51825127 is a prime.

It is a super-2 number, since 2×51825131² = 5371688406334322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51825131.

It is not a weakly prime, because it can be changed into another prime (51825121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25912565 + 25912566.

It is an arithmetic number, because the mean of its divisors is an integer number (25912566).

Almost surely, 2^51825131 is an apocalyptic number.

51825131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51825131 is an equidigital number, since it uses as much as digits as its factorization.

51825131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 26.

The square root of 51825131 is about 7198.9673565033. The cubic root of 51825131 is about 372.8322480462.

Adding to 51825131 its reverse (13152815), we get a palindrome (64977946).

The spelling of 51825131 in words is "fifty-one million, eight hundred twenty-five thousand, one hundred thirty-one".