749556541 has 4 divisors (see below), whose sum is σ = 752224284. Its totient is φ = 746888800.

The previous prime is 749556529. The next prime is 749556553. The reversal of 749556541 is 145655947.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (749556529) and next prime (749556553).

It can be written as a sum of positive squares in 2 ways, for example, as 547092100 + 202464441 = 23390^2 + 14229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749556541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749556491 and 749556500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749550541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333450 + ... + 1334011.

It is an arithmetic number, because the mean of its divisors is an integer number (188056071).

Almost surely, 2^749556541 is an apocalyptic number.

It is an amenable number.

749556541 is a deficient number, since it is larger than the sum of its proper divisors (2667743).

749556541 is a wasteful number, since it uses less digits than its factorization.

749556541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667742.

The product of its digits is 756000, while the sum is 46.

The square root of 749556541 is about 27378.0302615071. The cubic root of 749556541 is about 908.3811903373.

The spelling of 749556541 in words is "seven hundred forty-nine million, five hundred fifty-six thousand, five hundred forty-one".