1520501 has 2 divisors, whose sum is σ = 1520502. Its totient is φ = 1520500.

The previous prime is 1520483. The next prime is 1520503. The reversal of 1520501 is 1050251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 139876 = 1175^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520501 - 2¹⁴ = 1504117 is a prime.

Together with 1520503, 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 (1520503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760250 + 760251.

It is an arithmetic number, because the mean of its divisors is an integer number (760251).

2^1520501 is an apocalyptic number.

It is an amenable number.

1520501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520501 is an equidigital number, since it uses as much as digits as its factorization.

1520501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 1520501 is about 1233.0859661840. The cubic root of 1520501 is about 114.9905726361.

Adding to 1520501 its reverse (1050251), we get a palindrome (2570752).

The spelling of 1520501 in words is "one million, five hundred twenty thousand, five hundred one".