1453981 has 4 divisors (see below), whose sum is σ = 1464732. Its totient is φ = 1443232.

The previous prime is 1453961. The next prime is 1453997. The reversal of 1453981 is 1893541.

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 1265625 + 188356 = 1125^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 1453981 - 2⁹ = 1453469 is a prime.

It is a super-2 number, since 2×1453981² = 4228121496722, 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 (1453961) 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, 5170 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (366183).

2^1453981 is an apocalyptic number.

It is an amenable number.

1453981 is a deficient number, since it is larger than the sum of its proper divisors (10751).

1453981 is a wasteful number, since it uses less digits than its factorization.

1453981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750.

The product of its digits is 4320, while the sum is 31.

The square root of 1453981 is about 1205.8113451117. The cubic root of 1453981 is about 113.2886088426.

The spelling of 1453981 in words is "one million, four hundred fifty-three thousand, nine hundred eighty-one".