7475381 has 2 divisors, whose sum is σ = 7475382. Its totient is φ = 7475380.

The previous prime is 7475357. The next prime is 7475383. The reversal of 7475381 is 1835747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 625 = 2734^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 7475381 - 2⁶ = 7475317 is a prime.

It is a super-2 number, since 2×7475381² = 111762642190322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 7475383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7475383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737690 + 3737691.

It is an arithmetic number, because the mean of its divisors is an integer number (3737691).

Almost surely, 2^7475381 is an apocalyptic number.

It is an amenable number.

7475381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7475381 is an equidigital number, since it uses as much as digits as its factorization.

7475381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 35.

The square root of 7475381 is about 2734.1142990007. The cubic root of 7475381 is about 195.5289692225.

The spelling of 7475381 in words is "seven million, four hundred seventy-five thousand, three hundred eighty-one".