5651278 has 4 divisors (see below), whose sum is σ = 8476920. Its totient is φ = 2825638.

The previous prime is 5651273. The next prime is 5651279. The reversal of 5651278 is 8721565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8721565 = 5 ⋅1744313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651273) 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, 1412818 + ... + 1412821.

It is an arithmetic number, because the mean of its divisors is an integer number (2119230).

Almost surely, 2^5651278 is an apocalyptic number.

5651278 is a deficient number, since it is larger than the sum of its proper divisors (2825642).

5651278 is a wasteful number, since it uses less digits than its factorization.

5651278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825641.

The product of its digits is 16800, while the sum is 34.

The square root of 5651278 is about 2377.2416789212. The cubic root of 5651278 is about 178.1211774290.

It can be divided in two parts, 5651 and 278, that added together give a square (5929 = 77²).

The spelling of 5651278 in words is "five million, six hundred fifty-one thousand, two hundred seventy-eight".