1523161 has 2 divisors, whose sum is σ = 1523162. Its totient is φ = 1523160.

The previous prime is 1523153. The next prime is 1523177. The reversal of 1523161 is 1613251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 632025 = 944^2 + 795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523161 - 2³ = 1523153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761580 + 761581.

It is an arithmetic number, because the mean of its divisors is an integer number (761581).

2^1523161 is an apocalyptic number.

It is an amenable number.

1523161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523161 is an equidigital number, since it uses as much as digits as its factorization.

1523161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180, while the sum is 19.

The square root of 1523161 is about 1234.1640895764. The cubic root of 1523161 is about 115.0575893033.

The spelling of 1523161 in words is "one million, five hundred twenty-three thousand, one hundred sixty-one".