1081572 has 24 divisors (see below), whose sum is σ = 2542176. Its totient is φ = 357888.

The previous prime is 1081541. The next prime is 1081583. The reversal of 1081572 is 2751801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (105924).

2^1081572 is an apocalyptic number.

1081572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081572 is an abundant number, since it is smaller than the sum of its proper divisors (1460604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1081572 is a wasteful number, since it uses less digits than its factorization.

1081572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1081572 is about 1039.9865383744. The cubic root of 1081572 is about 102.6483119677.

It can be divided in two parts, 1081 and 572, that added together give a triangular number (1653 = T₅₇).

The spelling of 1081572 in words is "one million, eighty-one thousand, five hundred seventy-two".