51144442 has 8 divisors (see below), whose sum is σ = 77688000. Its totient is φ = 25248444.

The previous prime is 51144427. The next prime is 51144461. The reversal of 51144442 is 24444115.

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

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, 161692 + ... + 162007.

It is an arithmetic number, because the mean of its divisors is an integer number (9711000).

Almost surely, 2^51144442 is an apocalyptic number.

51144442 is a deficient number, since it is larger than the sum of its proper divisors (26543558).

51144442 is a wasteful number, since it uses less digits than its factorization.

51144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323780.

The product of its digits is 2560, while the sum is 25.

The square root of 51144442 is about 7151.5342409863. The cubic root of 51144442 is about 371.1927469367.

Adding to 51144442 its reverse (24444115), we get a palindrome (75588557).

The spelling of 51144442 in words is "fifty-one million, one hundred forty-four thousand, four hundred forty-two".