774552091 has 2 divisors, whose sum is σ = 774552092. Its totient is φ = 774552090.

The previous prime is 774552083. The next prime is 774552131. The reversal of 774552091 is 190255477.

It is an a-pointer prime, because the next prime (774552131) can be obtained adding 774552091 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (190255477) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 774552091 - 2³ = 774552083 is a prime.

It is not a weakly prime, because it can be changed into another prime (774552001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387276045 + 387276046.

It is an arithmetic number, because the mean of its divisors is an integer number (387276046).

Almost surely, 2^774552091 is an apocalyptic number.

774552091 is a deficient number, since it is larger than the sum of its proper divisors (1).

774552091 is an equidigital number, since it uses as much as digits as its factorization.

774552091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 774552091 is about 27830.7759683412. The cubic root of 774552091 is about 918.3682840473.

The spelling of 774552091 in words is "seven hundred seventy-four million, five hundred fifty-two thousand, ninety-one".