51342444 has 48 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 17058960.

The previous prime is 51342407. The next prime is 51342451. The reversal of 51342444 is 44424315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45997 + ... + 47099.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^51342444 is an apocalyptic number.

51342444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51342444 is an abundant number, since it is smaller than the sum of its proper divisors (82197396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51342444 is a wasteful number, since it uses less digits than its factorization.

51342444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1539 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 51342444 is about 7165.3641917212. The cubic root of 51342444 is about 371.6711453765.

Adding to 51342444 its reverse (44424315), we get a palindrome (95766759).

The spelling of 51342444 in words is "fifty-one million, three hundred forty-two thousand, four hundred forty-four".