51254474 has 8 divisors (see below), whose sum is σ = 77964768. Its totient is φ = 25266220.

The previous prime is 51254461. The next prime is 51254479. The reversal of 51254474 is 47445215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51254474² = 5254042210033352, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51254474.

It is not an unprimeable number, because it can be changed into a prime (51254479) 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 in 3 ways as a sum of consecutive naturals, for example, 180332 + ... + 180615.

It is an arithmetic number, because the mean of its divisors is an integer number (9745596).

Almost surely, 2^51254474 is an apocalyptic number.

51254474 is a deficient number, since it is larger than the sum of its proper divisors (26710294).

51254474 is a wasteful number, since it uses less digits than its factorization.

51254474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361020.

The product of its digits is 22400, while the sum is 32.

The square root of 51254474 is about 7159.2230025332. The cubic root of 51254474 is about 371.4587505909.

Adding to 51254474 its reverse (47445215), we get a palindrome (98699689).

The spelling of 51254474 in words is "fifty-one million, two hundred fifty-four thousand, four hundred seventy-four".