5831978 has 4 divisors (see below), whose sum is σ = 8747970. Its totient is φ = 2915988.

The previous prime is 5831971. The next prime is 5831981. The reversal of 5831978 is 8791385.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5822569 + 9409 = 2413^2 + 97^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5831971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1457993 + ... + 1457996.

Almost surely, 2^5831978 is an apocalyptic number.

5831978 is a deficient number, since it is larger than the sum of its proper divisors (2915992).

5831978 is a wasteful number, since it uses less digits than its factorization.

5831978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915991.

The product of its digits is 60480, while the sum is 41.

The square root of 5831978 is about 2414.9488607422. The cubic root of 5831978 is about 179.9997736623. Note that the first 3 decimals are identical.

The spelling of 5831978 in words is "five million, eight hundred thirty-one thousand, nine hundred seventy-eight".