402153161 has 2 divisors, whose sum is σ = 402153162. Its totient is φ = 402153160.

The previous prime is 402153151. The next prime is 402153163. The reversal of 402153161 is 161351204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204919225 + 197233936 = 14315^2 + 14044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402153161 is a prime.

Together with 402153163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402153163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201076580 + 201076581.

It is an arithmetic number, because the mean of its divisors is an integer number (201076581).

Almost surely, 2^402153161 is an apocalyptic number.

It is an amenable number.

402153161 is a deficient number, since it is larger than the sum of its proper divisors (1).

402153161 is an equidigital number, since it uses as much as digits as its factorization.

402153161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 402153161 is about 20053.7567802145. The cubic root of 402153161 is about 738.1259867950.

The spelling of 402153161 in words is "four hundred two million, one hundred fifty-three thousand, one hundred sixty-one".