1532981 has 4 divisors (see below), whose sum is σ = 1582464. Its totient is φ = 1483500.

The previous prime is 1532963. The next prime is 1532983. The reversal of 1532981 is 1892351.

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: 1892351 = 941 ⋅2011.

It is a cyclic number.

It is not a de Polignac number, because 1532981 - 2⁶ = 1532917 is a prime.

It is a super-2 number, since 2×1532981² = 4700061492722, 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 (1532983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24695 + ... + 24756.

It is an arithmetic number, because the mean of its divisors is an integer number (395616).

2^1532981 is an apocalyptic number.

It is an amenable number.

1532981 is a deficient number, since it is larger than the sum of its proper divisors (49483).

1532981 is an equidigital number, since it uses as much as digits as its factorization.

1532981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49482.

The product of its digits is 2160, while the sum is 29.

The square root of 1532981 is about 1238.1360991426. The cubic root of 1532981 is about 115.3043231375.

The spelling of 1532981 in words is "one million, five hundred thirty-two thousand, nine hundred eighty-one".