351196561 has 4 divisors (see below), whose sum is σ = 351311652. Its totient is φ = 351081472.

The previous prime is 351196553. The next prime is 351196567. The reversal of 351196561 is 165691153.

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 252810000 + 98386561 = 15900^2 + 9919^2 .

It is a cyclic number.

It is not a de Polignac number, because 351196561 - 2³ = 351196553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 351196561.

It is not an unprimeable number, because it can be changed into a prime (351196567) 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, 52840 + ... + 59113.

It is an arithmetic number, because the mean of its divisors is an integer number (87827913).

Almost surely, 2^351196561 is an apocalyptic number.

It is an amenable number.

351196561 is a deficient number, since it is larger than the sum of its proper divisors (115091).

351196561 is a wasteful number, since it uses less digits than its factorization.

351196561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115090.

The product of its digits is 24300, while the sum is 37.

The square root of 351196561 is about 18740.2390859882. The cubic root of 351196561 is about 705.5320571567.

The spelling of 351196561 in words is "three hundred fifty-one million, one hundred ninety-six thousand, five hundred sixty-one".