7161385 has 48 divisors (see below), whose sum is σ = 11491200. Its totient is φ = 4181760.

The previous prime is 7161379. The next prime is 7161421. The reversal of 7161385 is 5831617.

7161385 = 71² + 72² + ... + 279².

It is not a de Polignac number, because 7161385 - 2¹¹ = 7159337 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 80421 + ... + 80509.

It is an arithmetic number, because the mean of its divisors is an integer number (239400).

Almost surely, 2^7161385 is an apocalyptic number.

It is an amenable number.

7161385 is a deficient number, since it is larger than the sum of its proper divisors (4329815).

7161385 is a wasteful number, since it uses less digits than its factorization.

7161385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 131 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 7161385 is about 2676.0764189387. The cubic root of 7161385 is about 192.7520507845.

The spelling of 7161385 in words is "seven million, one hundred sixty-one thousand, three hundred eighty-five".