2573555749 has 2 divisors, whose sum is σ = 2573555750. Its totient is φ = 2573555748.

The previous prime is 2573555723. The next prime is 2573555839. The reversal of 2573555749 is 9475553752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2450745025 + 122810724 = 49505^2 + 11082^2 .

It is a cyclic number.

It is not a de Polignac number, because 2573555749 - 2¹⁷ = 2573424677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2573555696 and 2573555705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2573555449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286777874 + 1286777875.

It is an arithmetic number, because the mean of its divisors is an integer number (1286777875).

Almost surely, 2^2573555749 is an apocalyptic number.

It is an amenable number.

2573555749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2573555749 is an equidigital number, since it uses as much as digits as its factorization.

2573555749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615000, while the sum is 52.

The square root of 2573555749 is about 50730.2252015502. The cubic root of 2573555749 is about 1370.3910917478.

The spelling of 2573555749 in words is "two billion, five hundred seventy-three million, five hundred fifty-five thousand, seven hundred forty-nine".