51042254 has 4 divisors (see below), whose sum is σ = 76563384. Its totient is φ = 25521126.

The previous prime is 51042241. The next prime is 51042263. The reversal of 51042254 is 45224015.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760562 + ... + 12760565.

It is an arithmetic number, because the mean of its divisors is an integer number (19140846).

Almost surely, 2^51042254 is an apocalyptic number.

51042254 is a deficient number, since it is larger than the sum of its proper divisors (25521130).

51042254 is a wasteful number, since it uses less digits than its factorization.

51042254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25521129.

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

The square root of 51042254 is about 7144.3861877701. The cubic root of 51042254 is about 370.9453643362.

Adding to 51042254 its reverse (45224015), we get a palindrome (96266269).

The spelling of 51042254 in words is "fifty-one million, forty-two thousand, two hundred fifty-four".