51031542 has 8 divisors (see below), whose sum is σ = 102063096. Its totient is φ = 17010512.

The previous prime is 51031537. The next prime is 51031553. The reversal of 51031542 is 24513015.

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

51031542 is an admirable number.

It is a congruent number.

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, 4252623 + ... + 4252634.

It is an arithmetic number, because the mean of its divisors is an integer number (12757887).

Almost surely, 2^51031542 is an apocalyptic number.

51031542 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.

51031542 is a wasteful number, since it uses less digits than its factorization.

51031542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505262.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51031542 is about 7143.6364689141. The cubic root of 51031542 is about 370.9194129957.

Adding to 51031542 its reverse (24513015), we get a palindrome (75544557).

The spelling of 51031542 in words is "fifty-one million, thirty-one thousand, five hundred forty-two".