7551491 has 2 divisors, whose sum is σ = 7551492. Its totient is φ = 7551490.

The previous prime is 7551461. The next prime is 7551497. The reversal of 7551491 is 1941557.

It is a strong prime.

It is an emirp because it is prime and its reverse (1941557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7551491 - 2¹⁴ = 7535107 is a prime.

It is not a weakly prime, because it can be changed into another prime (7551497) 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, 3775745 + 3775746.

It is an arithmetic number, because the mean of its divisors is an integer number (3775746).

Almost surely, 2^7551491 is an apocalyptic number.

7551491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7551491 is an equidigital number, since it uses as much as digits as its factorization.

7551491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 32.

The square root of 7551491 is about 2747.9976346424. The cubic root of 7551491 is about 196.1903173620.

The spelling of 7551491 in words is "seven million, five hundred fifty-one thousand, four hundred ninety-one".