745065551 has 8 divisors (see below), whose sum is σ = 756864000. Its totient is φ = 733303480.

The previous prime is 745065533. The next prime is 745065583. The reversal of 745065551 is 155560547.

745065551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 745065551 - 2¹⁰ = 745064527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745025551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33770 + ... + 51288.

It is an arithmetic number, because the mean of its divisors is an integer number (94608000).

Almost surely, 2^745065551 is an apocalyptic number.

745065551 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

745065551 is a deficient number, since it is larger than the sum of its proper divisors (11798449).

745065551 is a wasteful number, since it uses less digits than its factorization.

745065551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18189.

The product of its (nonzero) digits is 105000, while the sum is 38.

The square root of 745065551 is about 27295.8889029099. Note that the first 3 decimals coincide. The cubic root of 745065551 is about 906.5633574409.

The spelling of 745065551 in words is "seven hundred forty-five million, sixty-five thousand, five hundred fifty-one".