161284957 has 2 divisors, whose sum is σ = 161284958. Its totient is φ = 161284956.

The previous prime is 161284927. The next prime is 161284997. The reversal of 161284957 is 759482161.

161284957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121418361 + 39866596 = 11019^2 + 6314^2 .

It is a cyclic number.

It is not a de Polignac number, because 161284957 - 2¹⁹ = 160760669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161284927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80642478 + 80642479.

It is an arithmetic number, because the mean of its divisors is an integer number (80642479).

Almost surely, 2^161284957 is an apocalyptic number.

It is an amenable number.

161284957 is a deficient number, since it is larger than the sum of its proper divisors (1).

161284957 is an equidigital number, since it uses as much as digits as its factorization.

161284957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 161284957 is about 12699.8014551409. The cubic root of 161284957 is about 544.3329459196.

The spelling of 161284957 in words is "one hundred sixty-one million, two hundred eighty-four thousand, nine hundred fifty-seven".