51244442 has 8 divisors (see below), whose sum is σ = 76960800. Its totient is φ = 25590844.

The previous prime is 51244399. The next prime is 51244447. The reversal of 51244442 is 24444215.

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

It is not an unprimeable number, because it can be changed into a prime (51244447) 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, 13592 + ... + 16947.

It is an arithmetic number, because the mean of its divisors is an integer number (9620100).

Almost surely, 2^51244442 is an apocalyptic number.

51244442 is a deficient number, since it is larger than the sum of its proper divisors (25716358).

51244442 is a wasteful number, since it uses less digits than its factorization.

51244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31380.

The product of its digits is 5120, while the sum is 26.

The square root of 51244442 is about 7158.5223335546. The cubic root of 51244442 is about 371.4345138948.

Adding to 51244442 its reverse (24444215), we get a palindrome (75688657).

The spelling of 51244442 in words is "fifty-one million, two hundred forty-four thousand, four hundred forty-two".