161006357 has 2 divisors, whose sum is σ = 161006358. Its totient is φ = 161006356.

The previous prime is 161006311. The next prime is 161006359. The reversal of 161006357 is 753600161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153115876 + 7890481 = 12374^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 161006357 - 2¹⁴ = 160989973 is a prime.

It is a super-2 number, since 2×161006357² = 51846093988822898, which contains 22 as substring.

Together with 161006359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161006359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80503178 + 80503179.

It is an arithmetic number, because the mean of its divisors is an integer number (80503179).

Almost surely, 2^161006357 is an apocalyptic number.

It is an amenable number.

161006357 is a deficient number, since it is larger than the sum of its proper divisors (1).

161006357 is an equidigital number, since it uses as much as digits as its factorization.

161006357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 161006357 is about 12688.8280388695. The cubic root of 161006357 is about 544.0193424585.

The spelling of 161006357 in words is "one hundred sixty-one million, six thousand, three hundred fifty-seven".