3561534 has 48 divisors (see below), whose sum is σ = 8322912. Its totient is φ = 1096704.

The previous prime is 3561529. The next prime is 3561539. The reversal of 3561534 is 4351653.

It is an interprime number because it is at equal distance from previous prime (3561529) and next prime (3561539).

It is a junction number, because it is equal to n+sod(n) for n = 3561498 and 3561507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561539) 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, 31462 + ... + 31574.

It is an arithmetic number, because the mean of its divisors is an integer number (173394).

Almost surely, 2^3561534 is an apocalyptic number.

3561534 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3561534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4161456).

3561534 is an abundant number, since it is smaller than the sum of its proper divisors (4761378).

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

3561534 is a wasteful number, since it uses less digits than its factorization.

3561534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 238 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3561534 is about 1887.2026918166. The cubic root of 3561534 is about 152.7140629036.

It can be divided in two parts, 3561 and 534, that added together give a triangular number (4095 = T₉₀).

The spelling of 3561534 in words is "three million, five hundred sixty-one thousand, five hundred thirty-four".