1520801 has 2 divisors, whose sum is σ = 1520802. Its totient is φ = 1520800.

The previous prime is 1520777. The next prime is 1520821. The reversal of 1520801 is 1080251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 78400 = 1201^2 + 280^2 .

It is an emirp because it is prime and its reverse (1080251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1520801 - 2¹⁴ = 1504417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520801.

It is not a weakly prime, because it can be changed into another prime (1520821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760400 + 760401.

It is an arithmetic number, because the mean of its divisors is an integer number (760401).

2^1520801 is an apocalyptic number.

It is an amenable number.

1520801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520801 is an equidigital number, since it uses as much as digits as its factorization.

1520801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1520801 is about 1233.2076062042. The cubic root of 1520801 is about 114.9981348154.

The spelling of 1520801 in words is "one million, five hundred twenty thousand, eight hundred one".