1506121 has 2 divisors, whose sum is σ = 1506122. Its totient is φ = 1506120.

The previous prime is 1506103. The next prime is 1506137. The reversal of 1506121 is 1216051.

It is a happy number.

It is an a-pointer prime, because the next prime (1506137) can be obtained adding 1506121 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 622521 = 940^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1506121 - 2⁷ = 1505993 is a prime.

It is equal to p₁₁₄₆₁₃ and since 1506121 and 114613 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 1506095 and 1506104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1506191) 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, 753060 + 753061.

It is an arithmetic number, because the mean of its divisors is an integer number (753061).

2^1506121 is an apocalyptic number.

It is an amenable number.

1506121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1506121 is an equidigital number, since it uses as much as digits as its factorization.

1506121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1506121 is about 1227.2412150837. The cubic root of 1506121 is about 114.6269195137.

The spelling of 1506121 in words is "one million, five hundred six thousand, one hundred twenty-one".