740053561 has 4 divisors (see below), whose sum is σ = 796980772. Its totient is φ = 683126352.

The previous prime is 740053547. The next prime is 740053603. The reversal of 740053561 is 165350047.

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

It can be written as a sum of positive squares in 2 ways, for example, as 489781161 + 250272400 = 22131^2 + 15820^2 .

It is a cyclic number.

It is not a de Polignac number, because 740053561 - 2¹¹ = 740051513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740054561) 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 in 3 ways as a sum of consecutive naturals, for example, 28463586 + ... + 28463611.

It is an arithmetic number, because the mean of its divisors is an integer number (199245193).

Almost surely, 2^740053561 is an apocalyptic number.

It is an amenable number.

740053561 is a deficient number, since it is larger than the sum of its proper divisors (56927211).

740053561 is a wasteful number, since it uses less digits than its factorization.

740053561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56927210.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 740053561 is about 27203.9254704169. The cubic root of 740053561 is about 904.5259917137.

The spelling of 740053561 in words is "seven hundred forty million, fifty-three thousand, five hundred sixty-one".