375642569 has 2 divisors, whose sum is σ = 375642570. Its totient is φ = 375642568.

The previous prime is 375642499. The next prime is 375642571. The reversal of 375642569 is 965246573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351750025 + 23892544 = 18755^2 + 4888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-375642569 is a prime.

It is a super-2 number, since 2×375642569² = 282214679289839522, which contains 22 as substring.

Together with 375642571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (375642599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187821284 + 187821285.

It is an arithmetic number, because the mean of its divisors is an integer number (187821285).

Almost surely, 2^375642569 is an apocalyptic number.

It is an amenable number.

375642569 is a deficient number, since it is larger than the sum of its proper divisors (1).

375642569 is an equidigital number, since it uses as much as digits as its factorization.

375642569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 47.

The square root of 375642569 is about 19381.5006900911. The cubic root of 375642569 is about 721.5364367254.

The spelling of 375642569 in words is "three hundred seventy-five million, six hundred forty-two thousand, five hundred sixty-nine".