1590161 has 2 divisors, whose sum is σ = 1590162. Its totient is φ = 1590160.

The previous prime is 1590137. The next prime is 1590203. The reversal of 1590161 is 1610951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 101761 = 1220^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1590161 - 2¹⁸ = 1328017 is a prime.

It is a super-2 number, since 2×1590161² = 5057224011842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1590101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795080 + 795081.

It is an arithmetic number, because the mean of its divisors is an integer number (795081).

2^1590161 is an apocalyptic number.

It is an amenable number.

1590161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1590161 is an equidigital number, since it uses as much as digits as its factorization.

1590161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 1590161 is about 1261.0158603285. The cubic root of 1590161 is about 116.7204713275.

The spelling of 1590161 in words is "one million, five hundred ninety thousand, one hundred sixty-one".