161051760 has 80 divisors (see below), whose sum is σ = 554741280. Its totient is φ = 42946560.

The previous prime is 161051753. The next prime is 161051767. The reversal of 161051760 is 67150161.

It is an interprime number because it is at equal distance from previous prime (161051753) and next prime (161051767).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161051767) 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 15 ways as a sum of consecutive naturals, for example, 35121 + ... + 39440.

It is an arithmetic number, because the mean of its divisors is an integer number (6934266).

Almost surely, 2^161051760 is an apocalyptic number.

161051760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161051760 is an abundant number, since it is smaller than the sum of its proper divisors (393689520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161051760 is a wasteful number, since it uses less digits than its factorization.

161051760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74583 (or 74571 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 161051760 is about 12690.6170062767. The cubic root of 161051760 is about 544.0704745779.

The spelling of 161051760 in words is "one hundred sixty-one million, fifty-one thousand, seven hundred sixty".