5201978 has 8 divisors (see below), whose sum is σ = 8013972. Its totient is φ = 2530656.

The previous prime is 5201969. The next prime is 5201981. The reversal of 5201978 is 8791025.

It can be written as a sum of positive squares in 2 ways, for example, as 4566769 + 635209 = 2137^2 + 797^2 .

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

It is a super-2 number, since 2×5201978² = 54121150224968, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35075 + ... + 35222.

Almost surely, 2^5201978 is an apocalyptic number.

5201978 is a deficient number, since it is larger than the sum of its proper divisors (2811994).

5201978 is a wasteful number, since it uses less digits than its factorization.

5201978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70336.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 5201978 is about 2280.7845141530. The cubic root of 5201978 is about 173.2697852187.

The spelling of 5201978 in words is "five million, two hundred one thousand, nine hundred seventy-eight".