5097981 has 32 divisors (see below), whose sum is σ = 8257536. Its totient is φ = 2736000.

The previous prime is 5097979. The next prime is 5097991. The reversal of 5097981 is 1897905.

It is a happy number.

It is not a de Polignac number, because 5097981 - 2¹ = 5097979 is a prime.

It is a super-2 number, since 2×5097981² = 51978820552722, which contains 22 as substring.

It is a Curzon number.

5097981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5097901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26596 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (258048).

Almost surely, 2^5097981 is an apocalyptic number.

It is an amenable number.

5097981 is a deficient number, since it is larger than the sum of its proper divisors (3159555).

5097981 is a wasteful number, since it uses less digits than its factorization.

5097981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 5097981 is about 2257.8708997638. The cubic root of 5097981 is about 172.1073446566.

The spelling of 5097981 in words is "five million, ninety-seven thousand, nine hundred eighty-one".