51524261 has 2 divisors, whose sum is σ = 51524262. Its totient is φ = 51524260.

The previous prime is 51524251. The next prime is 51524269. The reversal of 51524261 is 16242515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 2608225 = 6994^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 51524261 - 2⁶ = 51524197 is a prime.

It is a super-2 number, since 2×51524261² = 5309498943192242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51524261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51524269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25762130 + 25762131.

It is an arithmetic number, because the mean of its divisors is an integer number (25762131).

Almost surely, 2^51524261 is an apocalyptic number.

It is an amenable number.

51524261 is a deficient number, since it is larger than the sum of its proper divisors (1).

51524261 is an equidigital number, since it uses as much as digits as its factorization.

51524261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 51524261 is about 7178.0401921416. The cubic root of 51524261 is about 372.1093566997.

Adding to 51524261 its reverse (16242515), we get a palindrome (67766776).

The spelling of 51524261 in words is "fifty-one million, five hundred twenty-four thousand, two hundred sixty-one".