51454042 has 4 divisors (see below), whose sum is σ = 77181066. Its totient is φ = 25727020.

The previous prime is 51454027. The next prime is 51454069. The reversal of 51454042 is 24045415.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 48986001 + 2468041 = 6999^2 + 1571^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51453998 and 51454016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863509 + ... + 12863512.

Almost surely, 2^51454042 is an apocalyptic number.

51454042 is a deficient number, since it is larger than the sum of its proper divisors (25727024).

51454042 is a wasteful number, since it uses less digits than its factorization.

51454042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25727023.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 51454042 is about 7173.1472869306. The cubic root of 51454042 is about 371.9402387909.

Adding to 51454042 its reverse (24045415), we get a palindrome (75499457).

The spelling of 51454042 in words is "fifty-one million, four hundred fifty-four thousand, forty-two".