5157778 has 8 divisors (see below), whose sum is σ = 8143920. Its totient is φ = 2443140.

The previous prime is 5157743. The next prime is 5157787. The reversal of 5157778 is 8777515.

It is a happy number.

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

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 5157778.

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, 67828 + ... + 67903.

It is an arithmetic number, because the mean of its divisors is an integer number (1017990).

Almost surely, 2^5157778 is an apocalyptic number.

5157778 is a deficient number, since it is larger than the sum of its proper divisors (2986142).

5157778 is a wasteful number, since it uses less digits than its factorization.

5157778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135752.

The product of its digits is 68600, while the sum is 40.

The square root of 5157778 is about 2271.0741951773. The cubic root of 5157778 is about 172.7776443201. Note that the first 3 decimals are identical.

The spelling of 5157778 in words is "five million, one hundred fifty-seven thousand, seven hundred seventy-eight".