351561601 has 4 divisors (see below), whose sum is σ = 366846912. Its totient is φ = 336276292.

The previous prime is 351561599. The next prime is 351561611. The reversal of 351561601 is 106165153.

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.

It is a cyclic number.

It is not a de Polignac number, because 351561601 - 2¹ = 351561599 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 351561601.

It is not an unprimeable number, because it can be changed into a prime (351561611) 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, 7642621 + ... + 7642666.

It is an arithmetic number, because the mean of its divisors is an integer number (91711728).

Almost surely, 2^351561601 is an apocalyptic number.

It is an amenable number.

351561601 is a deficient number, since it is larger than the sum of its proper divisors (15285311).

351561601 is a wasteful number, since it uses less digits than its factorization.

351561601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15285310.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 351561601 is about 18749.9760266513. The cubic root of 351561601 is about 705.7764200664.

The spelling of 351561601 in words is "three hundred fifty-one million, five hundred sixty-one thousand, six hundred one".