351851121 has 16 divisors (see below), whose sum is σ = 527699520. Its totient is φ = 234565956.

The previous prime is 351851119. The next prime is 351851179. The reversal of 351851121 is 121158153.

It is not a de Polignac number, because 351851121 - 2¹ = 351851119 is a prime.

It is a super-2 number, since 2×351851121² = 247598422697913282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351851191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78255 + ... + 82628.

It is an arithmetic number, because the mean of its divisors is an integer number (32981220).

Almost surely, 2^351851121 is an apocalyptic number.

It is an amenable number.

351851121 is a deficient number, since it is larger than the sum of its proper divisors (175848399).

351851121 is an frugal number, since it uses more digits than its factorization.

351851121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160904 (or 160886 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 351851121 is about 18757.6949809938. The cubic root of 351851121 is about 705.9701085713.

The spelling of 351851121 in words is "three hundred fifty-one million, eight hundred fifty-one thousand, one hundred twenty-one".