4161537 has 20 divisors (see below), whose sum is σ = 6301680. Its totient is φ = 2736504.

The previous prime is 4161527. The next prime is 4161539. The reversal of 4161537 is 7351614.

4161537 is a `hidden beast` number, since 41 + 615 + 3 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4161537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 4161537.

It is not an unprimeable number, because it can be changed into a prime (4161539) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6414 + ... + 7032.

It is an arithmetic number, because the mean of its divisors is an integer number (315084).

It is a Proth number, since it is equal to 127 ⋅ 2¹⁵ + 1 and 127 < 2¹⁵.

Almost surely, 2^4161537 is an apocalyptic number.

It is an amenable number.

4161537 is a deficient number, since it is larger than the sum of its proper divisors (2140143).

4161537 is an equidigital number, since it uses as much as digits as its factorization.

4161537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 705 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 4161537 is about 2039.9845587651. The cubic root of 4161537 is about 160.8488351338.

It can be divided in two parts, 416 and 1537, that added together give a triangular number (1953 = T₆₂).

The spelling of 4161537 in words is "four million, one hundred sixty-one thousand, five hundred thirty-seven".