2973521 has 6 divisors (see below), whose sum is σ = 3159030. Its totient is φ = 2798336.

The previous prime is 2973517. The next prime is 2973539. The reversal of 2973521 is 1253792.

It can be written as a sum of positive squares in 3 ways, for example, as 1860496 + 1113025 = 1364^2 + 1055^2 .

It is not a de Polignac number, because 2973521 - 2² = 2973517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2973511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4856 + ... + 5433.

It is an arithmetic number, because the mean of its divisors is an integer number (526505).

2^2973521 is an apocalyptic number.

It is an amenable number.

2973521 is a deficient number, since it is larger than the sum of its proper divisors (185509).

2973521 is a wasteful number, since it uses less digits than its factorization.

2973521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10323 (or 10306 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 2973521 is about 1724.3900370856. The cubic root of 2973521 is about 143.7993766105.

The spelling of 2973521 in words is "two million, nine hundred seventy-three thousand, five hundred twenty-one".