164077541 has 2 divisors, whose sum is σ = 164077542. Its totient is φ = 164077540.

The previous prime is 164077493. The next prime is 164077553. The reversal of 164077541 is 145770461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155725441 + 8352100 = 12479^2 + 2890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164077541 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164076541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82038770 + 82038771.

It is an arithmetic number, because the mean of its divisors is an integer number (82038771).

Almost surely, 2^164077541 is an apocalyptic number.

It is an amenable number.

164077541 is a deficient number, since it is larger than the sum of its proper divisors (1).

164077541 is an equidigital number, since it uses as much as digits as its factorization.

164077541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 164077541 is about 12809.2755845130. The cubic root of 164077541 is about 547.4566214598.

The spelling of 164077541 in words is "one hundred sixty-four million, seventy-seven thousand, five hundred forty-one".