351485172 has 72 divisors (see below), whose sum is σ = 942439680. Its totient is φ = 110214720.

The previous prime is 351485137. The next prime is 351485177. The reversal of 351485172 is 271584153.

351485172 is a `hidden beast` number, since 3 + 5 + 1 + 485 + 172 = 666.

It is a super-2 number, since 2×351485172² = 247083652271739168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351485177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47029 + ... + 53987.

It is an arithmetic number, because the mean of its divisors is an integer number (13089440).

Almost surely, 2^351485172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351485172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471219840).

351485172 is an abundant number, since it is smaller than the sum of its proper divisors (590954508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351485172 is a wasteful number, since it uses less digits than its factorization.

351485172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053 (or 7048 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 351485172 is about 18747.9378065962. The cubic root of 351485172 is about 705.7252714244.

The spelling of 351485172 in words is "three hundred fifty-one million, four hundred eighty-five thousand, one hundred seventy-two".