1972573 has 4 divisors (see below), whose sum is σ = 1990780. Its totient is φ = 1954368.

The previous prime is 1972571. The next prime is 1972583. The reversal of 1972573 is 3752791.

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 777924 + 1194649 = 882^2 + 1093^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972573 - 2¹ = 1972571 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972571) 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, 8940 + ... + 9157.

It is an arithmetic number, because the mean of its divisors is an integer number (497695).

2^1972573 is an apocalyptic number.

It is an amenable number.

1972573 is a deficient number, since it is larger than the sum of its proper divisors (18207).

1972573 is a wasteful number, since it uses less digits than its factorization.

1972573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18206.

The product of its digits is 13230, while the sum is 34.

The square root of 1972573 is about 1404.4831789666. The cubic root of 1972573 is about 125.4135211601.

The spelling of 1972573 in words is "one million, nine hundred seventy-two thousand, five hundred seventy-three".