51420254 has 8 divisors (see below), whose sum is σ = 77161728. Its totient is φ = 25699680.

The previous prime is 51420247. The next prime is 51420287. The reversal of 51420254 is 45202415.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694 + ... + 11174.

It is an arithmetic number, because the mean of its divisors is an integer number (9645216).

Almost surely, 2^51420254 is an apocalyptic number.

51420254 is a deficient number, since it is larger than the sum of its proper divisors (25741474).

51420254 is a wasteful number, since it uses less digits than its factorization.

51420254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 51420254 is about 7170.7917275570. The cubic root of 51420254 is about 371.8588077501.

Adding to 51420254 its reverse (45202415), we get a palindrome (96622669).

The spelling of 51420254 in words is "fifty-one million, four hundred twenty thousand, two hundred fifty-four".