161457375 has 16 divisors (see below), whose sum is σ = 268665696. Its totient is φ = 86110400.

The previous prime is 161457371. The next prime is 161457397. The reversal of 161457375 is 573754161.

It is not a de Polignac number, because 161457375 - 2² = 161457371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161457371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214902 + ... + 215651.

It is an arithmetic number, because the mean of its divisors is an integer number (16791606).

Almost surely, 2^161457375 is an apocalyptic number.

161457375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161457375 is a deficient number, since it is larger than the sum of its proper divisors (107208321).

161457375 is an equidigital number, since it uses as much as digits as its factorization.

161457375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430571 (or 430561 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 161457375 is about 12706.5878582726. The cubic root of 161457375 is about 544.5268457429.

The spelling of 161457375 in words is "one hundred sixty-one million, four hundred fifty-seven thousand, three hundred seventy-five".