51274253 has 2 divisors, whose sum is σ = 51274254. Its totient is φ = 51274252.

The previous prime is 51274247. The next prime is 51274381. The reversal of 51274253 is 35247215.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47637604 + 3636649 = 6902^2 + 1907^2 .

It is a cyclic number.

It is not a de Polignac number, because 51274253 - 2¹² = 51270157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51274243) 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, 25637126 + 25637127.

It is an arithmetic number, because the mean of its divisors is an integer number (25637127).

Almost surely, 2^51274253 is an apocalyptic number.

It is an amenable number.

51274253 is a deficient number, since it is larger than the sum of its proper divisors (1).

51274253 is an equidigital number, since it uses as much as digits as its factorization.

51274253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 29.

The square root of 51274253 is about 7160.6042342808. The cubic root of 51274253 is about 371.5065261780.

The spelling of 51274253 in words is "fifty-one million, two hundred seventy-four thousand, two hundred fifty-three".