51424253 has 4 divisors (see below), whose sum is σ = 51444288. Its totient is φ = 51404220.

The previous prime is 51424249. The next prime is 51424277. The reversal of 51424253 is 35242415.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51424253 - 2² = 51424249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51424553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5483 + ... + 11528.

It is an arithmetic number, because the mean of its divisors is an integer number (12861072).

Almost surely, 2^51424253 is an apocalyptic number.

It is an amenable number.

51424253 is a deficient number, since it is larger than the sum of its proper divisors (20035).

51424253 is a wasteful number, since it uses less digits than its factorization.

51424253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20034.

The product of its digits is 4800, while the sum is 26.

The square root of 51424253 is about 7171.0705616386. The cubic root of 51424253 is about 371.8684474330.

Adding to 51424253 its reverse (35242415), we get a palindrome (86666668).

The spelling of 51424253 in words is "fifty-one million, four hundred twenty-four thousand, two hundred fifty-three".