7572749 has 2 divisors, whose sum is σ = 7572750. Its totient is φ = 7572748.

The previous prime is 7572739. The next prime is 7572751. The reversal of 7572749 is 9472757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5929225 + 1643524 = 2435^2 + 1282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7572749 is a prime.

Together with 7572751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7572739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786374 + 3786375.

It is an arithmetic number, because the mean of its divisors is an integer number (3786375).

Almost surely, 2^7572749 is an apocalyptic number.

It is an amenable number.

7572749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7572749 is an equidigital number, since it uses as much as digits as its factorization.

7572749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 41.

The square root of 7572749 is about 2751.8628236160. The cubic root of 7572749 is about 196.3742415852.

The spelling of 7572749 in words is "seven million, five hundred seventy-two thousand, seven hundred forty-nine".