51453442 has 8 divisors (see below), whose sum is σ = 79062732. Its totient is φ = 25099200.

The previous prime is 51453433. The next prime is 51453449. The reversal of 51453442 is 24435415.

It can be written as a sum of positive squares in 2 ways, for example, as 48288601 + 3164841 = 6949^2 + 1779^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51453442.

It is not an unprimeable number, because it can be changed into a prime (51453449) 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, 313659 + ... + 313822.

Almost surely, 2^51453442 is an apocalyptic number.

51453442 is a deficient number, since it is larger than the sum of its proper divisors (27609290).

51453442 is a wasteful number, since it uses less digits than its factorization.

51453442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627524.

The product of its digits is 9600, while the sum is 28.

The square root of 51453442 is about 7173.1054641626. The cubic root of 51453442 is about 371.9387930670.

Adding to 51453442 its reverse (24435415), we get a palindrome (75888857).

It can be divided in two parts, 514 and 53442, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 51453442 in words is "fifty-one million, four hundred fifty-three thousand, four hundred forty-two".