5278972981 has 8 divisors (see below), whose sum is σ = 5451405824. Its totient is φ = 5106674160.

The previous prime is 5278972973. The next prime is 5278972987. The reversal of 5278972981 is 1892798725.

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

It is a cyclic number.

It is not a de Polignac number, because 5278972981 - 2³ = 5278972973 is a prime.

It is a super-2 number, since 2×5278972981² = 55735111468256052722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278972987) 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, 49891 + ... + 114223.

It is an arithmetic number, because the mean of its divisors is an integer number (681425728).

Almost surely, 2^5278972981 is an apocalyptic number.

It is an amenable number.

5278972981 is a deficient number, since it is larger than the sum of its proper divisors (172432843).

5278972981 is a wasteful number, since it uses less digits than its factorization.

5278972981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67011.

The product of its digits is 5080320, while the sum is 58.

The square root of 5278972981 is about 72656.5412127497. The cubic root of 5278972981 is about 1741.2046290073.

The spelling of 5278972981 in words is "five billion, two hundred seventy-eight million, nine hundred seventy-two thousand, nine hundred eighty-one".