7161057 has 12 divisors (see below), whose sum is σ = 10700820. Its totient is φ = 4609248.

The previous prime is 7161047. The next prime is 7161071. The reversal of 7161057 is 7501617.

It can be written as a sum of positive squares in 2 ways, for example, as 3779136 + 3381921 = 1944^2 + 1839^2 .

It is not a de Polignac number, because 7161057 - 2⁸ = 7160801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7161057.

It is not an unprimeable number, because it can be changed into a prime (7161047) 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 11 ways as a sum of consecutive naturals, for example, 13458 + ... + 13979.

It is an arithmetic number, because the mean of its divisors is an integer number (891735).

Almost surely, 2^7161057 is an apocalyptic number.

It is an amenable number.

7161057 is a deficient number, since it is larger than the sum of its proper divisors (3539763).

7161057 is a wasteful number, since it uses less digits than its factorization.

7161057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27472 (or 27469 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 7161057 is about 2676.0151344864. The cubic root of 7161057 is about 192.7491079814.

The spelling of 7161057 in words is "seven million, one hundred sixty-one thousand, fifty-seven".