743551 has 2 divisors, whose sum is σ = 743552. Its totient is φ = 743550.

The previous prime is 743549. The next prime is 743573. The reversal of 743551 is 155347.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 743551 - 2¹ = 743549 is a prime.

Together with 743549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (743591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371775 + 371776.

It is an arithmetic number, because the mean of its divisors is an integer number (371776).

2⁷⁴³⁵⁵¹ is an apocalyptic number.

743551 is a deficient number, since it is larger than the sum of its proper divisors (1).

743551 is an equidigital number, since it uses as much as digits as its factorization.

743551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 25.

The square root of 743551 is about 862.2940333784. The cubic root of 743551 is about 90.5948660811.

Adding to 743551 its reverse (155347), we get a palindrome (898898).

The spelling of 743551 in words is "seven hundred forty-three thousand, five hundred fifty-one".