2573210661 has 32 divisors (see below), whose sum is σ = 4240097280. Its totient is φ = 1354457856.

The previous prime is 2573210659. The next prime is 2573210663. The reversal of 2573210661 is 1660123752.

It is an interprime number because it is at equal distance from previous prime (2573210659) and next prime (2573210663).

It is not a de Polignac number, because 2573210661 - 2¹ = 2573210659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2573210663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59901 + ... + 93458.

It is an arithmetic number, because the mean of its divisors is an integer number (132503040).

Almost surely, 2^2573210661 is an apocalyptic number.

2573210661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2573210661 is a deficient number, since it is larger than the sum of its proper divisors (1666886619).

2573210661 is a wasteful number, since it uses less digits than its factorization.

2573210661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153433.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2573210661 is about 50726.8238804678. The cubic root of 2573210661 is about 1370.3298371121.

The spelling of 2573210661 in words is "two billion, five hundred seventy-three million, two hundred ten thousand, six hundred sixty-one".