51742978 has 16 divisors (see below), whose sum is σ = 88821504. Its totient is φ = 22145760.

The previous prime is 51742973. The next prime is 51742979. The reversal of 51742978 is 87924715.

It is not an unprimeable number, because it can be changed into a prime (51742973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10726 + ... + 14782.

It is an arithmetic number, because the mean of its divisors is an integer number (5551344).

Almost surely, 2^51742978 is an apocalyptic number.

51742978 is a deficient number, since it is larger than the sum of its proper divisors (37078526).

51742978 is a wasteful number, since it uses less digits than its factorization.

51742978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977.

The product of its digits is 141120, while the sum is 43.

The square root of 51742978 is about 7193.2592056730. The cubic root of 51742978 is about 372.6351397718.

The spelling of 51742978 in words is "fifty-one million, seven hundred forty-two thousand, nine hundred seventy-eight".