1972529 has 4 divisors (see below), whose sum is σ = 2124276. Its totient is φ = 1820784.

The previous prime is 1972511. The next prime is 1972541. The reversal of 1972529 is 9252791.

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 874225 + 1098304 = 935^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972529 - 2²⁰ = 923953 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1972589) 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, 75854 + ... + 75879.

It is an arithmetic number, because the mean of its divisors is an integer number (531069).

2^1972529 is an apocalyptic number.

It is an amenable number.

1972529 is a deficient number, since it is larger than the sum of its proper divisors (151747).

1972529 is a wasteful number, since it uses less digits than its factorization.

1972529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151746.

The product of its digits is 11340, while the sum is 35.

The square root of 1972529 is about 1404.4675147543. The cubic root of 1972529 is about 125.4125886664.

The spelling of 1972529 in words is "one million, nine hundred seventy-two thousand, five hundred twenty-nine".