161707457 has 8 divisors (see below), whose sum is σ = 169955520. Its totient is φ = 153560880.

The previous prime is 161707453. The next prime is 161707463. The reversal of 161707457 is 754707161.

It is a happy number.

161707457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161707457 - 2² = 161707453 is a prime.

It is a super-2 number, since 2×161707457² = 52298603298813698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161707457.

It is not an unprimeable number, because it can be changed into a prime (161707453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22094 + ... + 28487.

It is an arithmetic number, because the mean of its divisors is an integer number (21244440).

Almost surely, 2^161707457 is an apocalyptic number.

It is an amenable number.

161707457 is a deficient number, since it is larger than the sum of its proper divisors (8248063).

161707457 is a wasteful number, since it uses less digits than its factorization.

161707457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50743.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 161707457 is about 12716.4246940718. The cubic root of 161707457 is about 544.8078406805.

The spelling of 161707457 in words is "one hundred sixty-one million, seven hundred seven thousand, four hundred fifty-seven".