3550091 has 2 divisors, whose sum is σ = 3550092. Its totient is φ = 3550090.

The previous prime is 3550069. The next prime is 3550109. The reversal of 3550091 is 1900553.

Together with next prime (3550109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1900553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3550091 - 2¹⁴ = 3533707 is a prime.

It is a super-2 number, since 2×3550091² = 25206292216562, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3550691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1775045 + 1775046.

It is an arithmetic number, because the mean of its divisors is an integer number (1775046).

Almost surely, 2^3550091 is an apocalyptic number.

3550091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3550091 is an equidigital number, since it uses as much as digits as its factorization.

3550091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 3550091 is about 1884.1685168795. The cubic root of 3550091 is about 152.5503336495.

The spelling of 3550091 in words is "three million, five hundred fifty thousand, ninety-one".