1572981 has 12 divisors (see below), whose sum is σ = 2161152. Its totient is φ = 1017648.

The previous prime is 1572929. The next prime is 1572997. The reversal of 1572981 is 1892751.

It is not a de Polignac number, because 1572981 - 2⁷ = 1572853 is a prime.

It is a super-2 number, since 2×1572981² = 4948538452722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3916 + ... + 4298.

It is an arithmetic number, because the mean of its divisors is an integer number (180096).

2^1572981 is an apocalyptic number.

It is an amenable number.

1572981 is a deficient number, since it is larger than the sum of its proper divisors (588171).

1572981 is an equidigital number, since it uses as much as digits as its factorization.

1572981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 423 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 1572981 is about 1254.1853929942. The cubic root of 1572981 is about 116.2986014840.

The spelling of 1572981 in words is "one million, five hundred seventy-two thousand, nine hundred eighty-one".