4951091 has 2 divisors, whose sum is σ = 4951092. Its totient is φ = 4951090.

The previous prime is 4951073. The next prime is 4951109. The reversal of 4951091 is 1901594.

Together with next prime (4951109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (4951073) and next prime (4951109).

It is a cyclic number.

It is not a de Polignac number, because 4951091 - 2¹⁰ = 4950067 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4951021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475545 + 2475546.

It is an arithmetic number, because the mean of its divisors is an integer number (2475546).

Almost surely, 2^4951091 is an apocalyptic number.

4951091 is a deficient number, since it is larger than the sum of its proper divisors (1).

4951091 is an equidigital number, since it uses as much as digits as its factorization.

4951091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 4951091 is about 2225.1047166369. The cubic root of 4951091 is about 170.4382120031.

It can be divided in two parts, 495 and 1091, that multiplied together give a palindrome (540045).

The spelling of 4951091 in words is "four million, nine hundred fifty-one thousand, ninety-one".