51140542 has 16 divisors (see below), whose sum is σ = 77785200. Its totient is φ = 25214400.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140542 is 24504115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82309 + ... + 82927.

It is an arithmetic number, because the mean of its divisors is an integer number (4861575).

Almost surely, 2^51140542 is an apocalyptic number.

51140542 is a deficient number, since it is larger than the sum of its proper divisors (26644658).

51140542 is a wasteful number, since it uses less digits than its factorization.

51140542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51140542 is about 7151.2615670244. The cubic root of 51140542 is about 371.1833116429.

Adding to 51140542 its reverse (24504115), we get a palindrome (75644657).

The spelling of 51140542 in words is "fifty-one million, one hundred forty thousand, five hundred forty-two".