7132981 has 4 divisors (see below), whose sum is σ = 7178572. Its totient is φ = 7087392.

The previous prime is 7132973. The next prime is 7132987. The reversal of 7132981 is 1892317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5267025 + 1865956 = 2295^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 7132981 - 2³ = 7132973 is a prime.

It is a super-2 number, since 2×7132981² = 101758835892722, 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 (7132987) 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, 22560 + ... + 22873.

It is an arithmetic number, because the mean of its divisors is an integer number (1794643).

Almost surely, 2^7132981 is an apocalyptic number.

It is an amenable number.

7132981 is a deficient number, since it is larger than the sum of its proper divisors (45591).

7132981 is a wasteful number, since it uses less digits than its factorization.

7132981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45590.

The product of its digits is 3024, while the sum is 31.

The square root of 7132981 is about 2670.7641228682. The cubic root of 7132981 is about 192.4968774441.

The spelling of 7132981 in words is "seven million, one hundred thirty-two thousand, nine hundred eighty-one".