3506525136 has 30 divisors (see below), whose sum is σ = 9813400610. Its totient is φ = 1168841664.

The previous prime is 3506525131. The next prime is 3506525149. The reversal of 3506525136 is 6315256053.

It can be written as a sum of positive squares in only one way, i.e., 2464526736 + 1041998400 = 49644^2 + 32280^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 3506525136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3506525131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12175291 + ... + 12175578.

Almost surely, 2^3506525136 is an apocalyptic number.

3506525136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3506525136 is an abundant number, since it is smaller than the sum of its proper divisors (6306875474).

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

3506525136 is a wasteful number, since it uses less digits than its factorization.

3506525136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24350883 (or 24350874 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 3506525136 is about 59215.9196162654. The cubic root of 3506525136 is about 1519.2374314338.

The spelling of 3506525136 in words is "three billion, five hundred six million, five hundred twenty-five thousand, one hundred thirty-six".