7161540 has 24 divisors (see below), whose sum is σ = 20052480. Its totient is φ = 1909728.

The previous prime is 7161509. The next prime is 7161547. The reversal of 7161540 is 451617.

It is a self number, because there is not a number n which added to its sum of digits gives 7161540.

It is not an unprimeable number, because it can be changed into a prime (7161547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59620 + ... + 59739.

It is an arithmetic number, because the mean of its divisors is an integer number (835520).

Almost surely, 2^7161540 is an apocalyptic number.

It is an amenable number.

7161540 is an abundant number, since it is smaller than the sum of its proper divisors (12890940).

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

7161540 is a wasteful number, since it uses less digits than its factorization.

7161540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119371 (or 119369 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 7161540 is about 2676.1053790910. The cubic root of 7161540 is about 192.7534414071.

The spelling of 7161540 in words is "seven million, one hundred sixty-one thousand, five hundred forty".