161450077 has 8 divisors (see below), whose sum is σ = 166921472. Its totient is φ = 155995200.

The previous prime is 161450057. The next prime is 161450083. The reversal of 161450077 is 770054161.

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 161450077 - 2¹⁹ = 160925789 is a prime.

It is a super-2 number, since 2×161450077² = 52132254726611858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161450017) 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, 17653 + ... + 25189.

It is an arithmetic number, because the mean of its divisors is an integer number (20865184).

Almost surely, 2^161450077 is an apocalyptic number.

It is an amenable number.

161450077 is a deficient number, since it is larger than the sum of its proper divisors (5471395).

161450077 is an equidigital number, since it uses as much as digits as its factorization.

161450077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8259.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 161450077 is about 12706.3006811581. The cubic root of 161450077 is about 544.5186412725.

The spelling of 161450077 in words is "one hundred sixty-one million, four hundred fifty thousand, seventy-seven".