351125561 has 8 divisors (see below), whose sum is σ = 362792448. Its totient is φ = 339480000.

The previous prime is 351125513. The next prime is 351125563. The reversal of 351125561 is 165521153.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 351125561 - 2²⁶ = 284016697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351125563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32516 + ... + 41946.

It is an arithmetic number, because the mean of its divisors is an integer number (45349056).

Almost surely, 2^351125561 is an apocalyptic number.

351125561 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

351125561 is a deficient number, since it is larger than the sum of its proper divisors (11666887).

351125561 is a wasteful number, since it uses less digits than its factorization.

351125561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663.

The product of its digits is 4500, while the sum is 29.

The square root of 351125561 is about 18738.3446707547. The cubic root of 351125561 is about 705.4845090904.

The spelling of 351125561 in words is "three hundred fifty-one million, one hundred twenty-five thousand, five hundred sixty-one".