1701171561 has 4 divisors (see below), whose sum is σ = 2268228752. Its totient is φ = 1134114372.

The previous prime is 1701171559. The next prime is 1701171601. The reversal of 1701171561 is 1651711071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1651711071 = 3 ⋅550570357.

It is not a de Polignac number, because 1701171561 - 2¹ = 1701171559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1701171541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283528591 + ... + 283528596.

It is an arithmetic number, because the mean of its divisors is an integer number (567057188).

Almost surely, 2^1701171561 is an apocalyptic number.

It is an amenable number.

1701171561 is a deficient number, since it is larger than the sum of its proper divisors (567057191).

1701171561 is an equidigital number, since it uses as much as digits as its factorization.

1701171561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567057190.

The product of its (nonzero) digits is 1470, while the sum is 30.

The square root of 1701171561 is about 41245.2610732433. The cubic root of 1701171561 is about 1193.7572933557.

The spelling of 1701171561 in words is "one billion, seven hundred one million, one hundred seventy-one thousand, five hundred sixty-one".