2521973 has 8 divisors (see below), whose sum is σ = 2688768. Its totient is φ = 2359984.

The previous prime is 2521969. The next prime is 2521979. The reversal of 2521973 is 3791252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521973 - 2² = 2521969 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 5⁶ + 2¹⁶ + 1 + 9⁴ + 7⁷ + 3¹³ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86 + ... + 2247.

It is an arithmetic number, because the mean of its divisors is an integer number (336096).

2^2521973 is an apocalyptic number.

2521973 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2521973 is a deficient number, since it is larger than the sum of its proper divisors (166795).

2521973 is a wasteful number, since it uses less digits than its factorization.

2521973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403.

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

The square root of 2521973 is about 1588.0721016377. The cubic root of 2521973 is about 136.1173475354.

The spelling of 2521973 in words is "two million, five hundred twenty-one thousand, nine hundred seventy-three".