51618342 has 8 divisors (see below), whose sum is σ = 103236696. Its totient is φ = 17206112.

The previous prime is 51618319. The next prime is 51618353. The reversal of 51618342 is 24381615.

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

51618342 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4301523 + ... + 4301534.

It is an arithmetic number, because the mean of its divisors is an integer number (12904587).

Almost surely, 2^51618342 is an apocalyptic number.

51618342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51618342 is a wasteful number, since it uses less digits than its factorization.

51618342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603062.

The product of its digits is 5760, while the sum is 30.

The square root of 51618342 is about 7184.5905937639. The cubic root of 51618342 is about 372.3357040123.

Adding to 51618342 its reverse (24381615), we get a palindrome (75999957).

The spelling of 51618342 in words is "fifty-one million, six hundred eighteen thousand, three hundred forty-two".