7775401 has 2 divisors, whose sum is σ = 7775402. Its totient is φ = 7775400.

The previous prime is 7775399. The next prime is 7775429. The reversal of 7775401 is 1045777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 3613801 = 2040^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 7775401 - 2¹ = 7775399 is a prime.

Together with 7775399, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7775461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3887700 + 3887701.

It is an arithmetic number, because the mean of its divisors is an integer number (3887701).

Almost surely, 2^7775401 is an apocalyptic number.

It is an amenable number.

7775401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7775401 is an equidigital number, since it uses as much as digits as its factorization.

7775401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 7775401 is about 2788.4406036349. The cubic root of 7775401 is about 198.1105477289.

The spelling of 7775401 in words is "seven million, seven hundred seventy-five thousand, four hundred one".