3525138 has 48 divisors (see below), whose sum is σ = 8062080. Its totient is φ = 1111968.

The previous prime is 3525133. The next prime is 3525143. The reversal of 3525138 is 8315253.

3525138 is a `hidden beast` number, since 3 + 525 + 138 = 666.

It is an interprime number because it is at equal distance from previous prime (3525133) and next prime (3525143).

It is not an unprimeable number, because it can be changed into a prime (3525133) 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, 44583 + ... + 44661.

It is an arithmetic number, because the mean of its divisors is an integer number (167960).

Almost surely, 2^3525138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3525138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4031040).

3525138 is an abundant number, since it is smaller than the sum of its proper divisors (4536942).

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

3525138 is a wasteful number, since it uses less digits than its factorization.

3525138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 188 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 3525138 is about 1877.5350862234. The cubic root of 3525138 is about 152.1920759699.

It can be divided in two parts, 3525 and 138, that added together give a palindrome (3663).

The spelling of 3525138 in words is "three million, five hundred twenty-five thousand, one hundred thirty-eight".