5477981 has 4 divisors (see below), whose sum is σ = 5493600. Its totient is φ = 5462364.

The previous prime is 5477971. The next prime is 5478001. The reversal of 5477981 is 1897745.

5477981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1897745 = 5 ⋅379549.

It is a cyclic number.

It is not a de Polignac number, because 5477981 - 2²² = 1283677 is a prime.

It is a super-2 number, since 2×5477981² = 60016551672722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5477951) 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 in 3 ways as a sum of consecutive naturals, for example, 7271 + ... + 7988.

It is an arithmetic number, because the mean of its divisors is an integer number (1373400).

Almost surely, 2^5477981 is an apocalyptic number.

It is an amenable number.

5477981 is a deficient number, since it is larger than the sum of its proper divisors (15619).

5477981 is a wasteful number, since it uses less digits than its factorization.

5477981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15618.

The product of its digits is 70560, while the sum is 41.

The square root of 5477981 is about 2340.5087053886. The cubic root of 5477981 is about 176.2815418961.

The spelling of 5477981 in words is "five million, four hundred seventy-seven thousand, nine hundred eighty-one".