5737981 has 4 divisors (see below), whose sum is σ = 6040000. Its totient is φ = 5435964.

The previous prime is 5737973. The next prime is 5737999. The reversal of 5737981 is 1897375.

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.

It is a cyclic number.

It is not a de Polignac number, because 5737981 - 2³ = 5737973 is a prime.

It is a super-2 number, since 2×5737981² = 65848851912722, which contains 22 as substring.

It is a Duffinian number.

5737981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5737951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150981 + ... + 151018.

It is an arithmetic number, because the mean of its divisors is an integer number (1510000).

Almost surely, 2^5737981 is an apocalyptic number.

It is an amenable number.

5737981 is a deficient number, since it is larger than the sum of its proper divisors (302019).

5737981 is a wasteful number, since it uses less digits than its factorization.

5737981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302018.

The product of its digits is 52920, while the sum is 40.

The square root of 5737981 is about 2395.4083159244. The cubic root of 5737981 is about 179.0274813980.

Subtracting from 5737981 its reverse (1897375), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5737981 in words is "five million, seven hundred thirty-seven thousand, nine hundred eighty-one".