161147757 has 8 divisors (see below), whose sum is σ = 216432576. Its totient is φ = 106647392.

The previous prime is 161147747. The next prime is 161147771. The reversal of 161147757 is 757741161.

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 161147757 - 2⁴ = 161147741 is a prime.

It is a super-2 number, since 2×161147757² = 51937199172262098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161147747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195633 + ... + 196454.

It is an arithmetic number, because the mean of its divisors is an integer number (27054072).

Almost surely, 2^161147757 is an apocalyptic number.

It is an amenable number.

161147757 is a deficient number, since it is larger than the sum of its proper divisors (55284819).

161147757 is a wasteful number, since it uses less digits than its factorization.

161147757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392227.

The product of its digits is 41160, while the sum is 39.

The square root of 161147757 is about 12694.3986466473. The cubic root of 161147757 is about 544.1785532053.

It can be divided in two parts, 16114 and 7757, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 161147757 in words is "one hundred sixty-one million, one hundred forty-seven thousand, seven hundred fifty-seven".