6161540 has 48 divisors (see below), whose sum is σ = 16136064. Its totient is φ = 1920000.

The previous prime is 6161527. The next prime is 6161579. The reversal of 6161540 is 451616.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461 + ... + 3540.

It is an arithmetic number, because the mean of its divisors is an integer number (336168).

Almost surely, 2^6161540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6161540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8068032).

6161540 is an abundant number, since it is smaller than the sum of its proper divisors (9974524).

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

6161540 is a wasteful number, since it uses less digits than its factorization.

6161540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 6161540 is about 2482.2449516516. The cubic root of 6161540 is about 183.3284039079.

The spelling of 6161540 in words is "six million, one hundred sixty-one thousand, five hundred forty".