745559545 has 4 divisors (see below), whose sum is σ = 894671460. Its totient is φ = 596447632.

The previous prime is 745559527. The next prime is 745559603. The reversal of 745559545 is 545955547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545955547 = 4231 ⋅129037.

It can be written as a sum of positive squares in 2 ways, for example, as 81775849 + 663783696 = 9043^2 + 25764^2 .

It is a cyclic number.

It is not a de Polignac number, because 745559545 - 2⁹ = 745559033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74555950 + ... + 74555959.

It is an arithmetic number, because the mean of its divisors is an integer number (223667865).

Almost surely, 2^745559545 is an apocalyptic number.

It is an amenable number.

745559545 is a deficient number, since it is larger than the sum of its proper divisors (149111915).

745559545 is a wasteful number, since it uses less digits than its factorization.

745559545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149111914.

The product of its digits is 3150000, while the sum is 49.

The square root of 745559545 is about 27304.9362753331. The cubic root of 745559545 is about 906.7636699817.

It can be divided in two parts, 74555 and 9545, that added together give a square (84100 = 290²).

The spelling of 745559545 in words is "seven hundred forty-five million, five hundred fifty-nine thousand, five hundred forty-five".