51380253 has 12 divisors (see below), whose sum is σ = 74337120. Its totient is φ = 34197576.

The previous prime is 51380249. The next prime is 51380269. The reversal of 51380253 is 35208315.

It is not a de Polignac number, because 51380253 - 2² = 51380249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51380233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1600 + ... + 10262.

It is an arithmetic number, because the mean of its divisors is an integer number (6194760).

Almost surely, 2^51380253 is an apocalyptic number.

It is an amenable number.

51380253 is a deficient number, since it is larger than the sum of its proper divisors (22956867).

51380253 is a wasteful number, since it uses less digits than its factorization.

51380253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9328 (or 9325 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 51380253 is about 7168.0020228792. The cubic root of 51380253 is about 371.7623568914.

Adding to 51380253 its reverse (35208315), we get a palindrome (86588568).

The spelling of 51380253 in words is "fifty-one million, three hundred eighty thousand, two hundred fifty-three".