740551 has 8 divisors (see below), whose sum is σ = 859520. Its totient is φ = 624888.

The previous prime is 740549. The next prime is 740561. The reversal of 740551 is 155047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 740551 - 2¹ = 740549 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740521) 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 in 7 ways as a sum of consecutive naturals, for example, 321 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (107440).

2⁷⁴⁰⁵⁵¹ is an apocalyptic number.

740551 is a deficient number, since it is larger than the sum of its proper divisors (118969).

740551 is a wasteful number, since it uses less digits than its factorization.

740551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 740551 is about 860.5527293548. The cubic root of 740551 is about 90.4728610260.

Adding to 740551 its reverse (155047), we get a palindrome (895598).

The spelling of 740551 in words is "seven hundred forty thousand, five hundred fifty-one".