754711561 has 2 divisors, whose sum is σ = 754711562. Its totient is φ = 754711560.

The previous prime is 754711541. The next prime is 754711603. The reversal of 754711561 is 165117457.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490844025 + 263867536 = 22155^2 + 16244^2 .

It is an emirp because it is prime and its reverse (165117457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-754711561 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 754711561.

It is not a weakly prime, because it can be changed into another prime (754711541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377355780 + 377355781.

It is an arithmetic number, because the mean of its divisors is an integer number (377355781).

Almost surely, 2^754711561 is an apocalyptic number.

It is an amenable number.

754711561 is a deficient number, since it is larger than the sum of its proper divisors (1).

754711561 is an equidigital number, since it uses as much as digits as its factorization.

754711561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29400, while the sum is 37.

The square root of 754711561 is about 27472.0141416679. The cubic root of 754711561 is about 910.4588761641.

The spelling of 754711561 in words is "seven hundred fifty-four million, seven hundred eleven thousand, five hundred sixty-one".