7491851 has 2 divisors, whose sum is σ = 7491852. Its totient is φ = 7491850.

The previous prime is 7491839. The next prime is 7491853. The reversal of 7491851 is 1581947.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7491851 - 2¹⁰ = 7490827 is a prime.

It is a super-2 number, since 2×7491851² = 112255662812402, which contains 22 as substring.

Together with 7491853, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7491853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3745925 + 3745926.

It is an arithmetic number, because the mean of its divisors is an integer number (3745926).

Almost surely, 2^7491851 is an apocalyptic number.

7491851 is a deficient number, since it is larger than the sum of its proper divisors (1).

7491851 is an equidigital number, since it uses as much as digits as its factorization.

7491851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 7491851 is about 2737.1245861305. The cubic root of 7491851 is about 195.6724624636.

The spelling of 7491851 in words is "seven million, four hundred ninety-one thousand, eight hundred fifty-one".