51562249 has 2 divisors, whose sum is σ = 51562250. Its totient is φ = 51562248.

The previous prime is 51562237. The next prime is 51562253. The reversal of 51562249 is 94226515.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 5322249 = 6800^2 + 2307^2 .

It is a cyclic number.

It is not a de Polignac number, because 51562249 - 2⁹ = 51561737 is a prime.

It is not a weakly prime, because it can be changed into another prime (51562229) 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, 25781124 + 25781125.

It is an arithmetic number, because the mean of its divisors is an integer number (25781125).

Almost surely, 2^51562249 is an apocalyptic number.

It is an amenable number.

51562249 is a deficient number, since it is larger than the sum of its proper divisors (1).

51562249 is an equidigital number, since it uses as much as digits as its factorization.

51562249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 34.

The square root of 51562249 is about 7180.6858307546. The cubic root of 51562249 is about 372.2007842937.

The spelling of 51562249 in words is "fifty-one million, five hundred sixty-two thousand, two hundred forty-nine".