4161531 has 8 divisors (see below), whose sum is σ = 6053184. Its totient is φ = 2522120.

The previous prime is 4161527. The next prime is 4161539. The reversal of 4161531 is 1351614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4161531 - 2² = 4161527 is a prime.

It is a super-2 number, since 2×4161531² = 34636680527922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4161498 and 4161507.

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 7 ways as a sum of consecutive naturals, for example, 63021 + ... + 63086.

It is an arithmetic number, because the mean of its divisors is an integer number (756648).

Almost surely, 2^4161531 is an apocalyptic number.

4161531 is a deficient number, since it is larger than the sum of its proper divisors (1891653).

4161531 is a wasteful number, since it uses less digits than its factorization.

4161531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126121.

The product of its digits is 360, while the sum is 21.

The square root of 4161531 is about 2039.9830881652. The cubic root of 4161531 is about 160.8487578312.

The spelling of 4161531 in words is "four million, one hundred sixty-one thousand, five hundred thirty-one".