3545172 has 72 divisors (see below), whose sum is σ = 9696960. Its totient is φ = 1088640.

The previous prime is 3545167. The next prime is 3545177. The reversal of 3545172 is 2715453.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3545167) and next prime (3545177).

Its product of digits (4200) is a multiple of the sum of its prime divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3545177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48528 + ... + 48600.

It is an arithmetic number, because the mean of its divisors is an integer number (134680).

Almost surely, 2^3545172 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 3545172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4848480).

3545172 is an abundant number, since it is smaller than the sum of its proper divisors (6151788).

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

3545172 is a wasteful number, since it uses less digits than its factorization.

3545172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 168 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 3545172 is about 1882.8627140607. The cubic root of 3545172 is about 152.4798432554.

The spelling of 3545172 in words is "three million, five hundred forty-five thousand, one hundred seventy-two".