145801161 has 16 divisors (see below), whose sum is σ = 235638720. Its totient is φ = 88364160.

The previous prime is 145801133. The next prime is 145801169. The reversal of 145801161 is 161108541.

145801161 is a `hidden beast` number, since 14 + 580 + 11 + 61 = 666.

It is not a de Polignac number, because 145801161 - 2¹⁵ = 145768393 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (145801169) 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, 245160 + ... + 245753.

It is an arithmetic number, because the mean of its divisors is an integer number (14727420).

Almost surely, 2^145801161 is an apocalyptic number.

145801161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145801161 is a deficient number, since it is larger than the sum of its proper divisors (89837559).

145801161 is a wasteful number, since it uses less digits than its factorization.

145801161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490933 (or 490927 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 145801161 is about 12074.8151538647. The cubic root of 145801161 is about 526.3245899053.

The spelling of 145801161 in words is "one hundred forty-five million, eight hundred one thousand, one hundred sixty-one".