161450541 has 36 divisors (see below), whose sum is σ = 272317500. Its totient is φ = 91905408.

The previous prime is 161450537. The next prime is 161450567. The reversal of 161450541 is 145054161.

161450541 is a `hidden beast` number, since 1 + 614 + 5 + 0 + 5 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133888041 + 27562500 = 11571^2 + 5250^2 .

It is not a de Polignac number, because 161450541 - 2² = 161450537 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161450141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 153385 + ... + 154433.

It is an arithmetic number, because the mean of its divisors is an integer number (7564375).

Almost surely, 2^161450541 is an apocalyptic number.

It is an amenable number.

161450541 is a deficient number, since it is larger than the sum of its proper divisors (110866959).

161450541 is a wasteful number, since it uses less digits than its factorization.

161450541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 161450541 is about 12706.3189398031. The cubic root of 161450541 is about 544.5191629124.

The spelling of 161450541 in words is "one hundred sixty-one million, four hundred fifty thousand, five hundred forty-one".