7161557 has 8 divisors (see below), whose sum is σ = 7822080. Its totient is φ = 6516720.

The previous prime is 7161547. The next prime is 7161559. The reversal of 7161557 is 7551617.

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 7161557 - 2⁶ = 7161493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7161559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2957 + ... + 4802.

It is an arithmetic number, because the mean of its divisors is an integer number (977760).

Almost surely, 2^7161557 is an apocalyptic number.

It is an amenable number.

7161557 is a deficient number, since it is larger than the sum of its proper divisors (660523).

7161557 is a wasteful number, since it uses less digits than its factorization.

7161557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7843.

The product of its digits is 7350, while the sum is 32.

The square root of 7161557 is about 2676.1085553467. The cubic root of 7161557 is about 192.7535939258.

The spelling of 7161557 in words is "seven million, one hundred sixty-one thousand, five hundred fifty-seven".