1501213 has 6 divisors (see below), whose sum is σ = 1746366. Its totient is φ = 1286712.

The previous prime is 1501207. The next prime is 1501217. The reversal of 1501213 is 3121051.

It can be written as a sum of positive squares in only one way, i.e., 1483524 + 17689 = 1218^2 + 133^2 .

It is not a de Polignac number, because 1501213 - 2⁹ = 1500701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1501193 and 1501202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1501217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15270 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (291061).

2^1501213 is an apocalyptic number.

It is an amenable number.

1501213 is a deficient number, since it is larger than the sum of its proper divisors (245153).

1501213 is an equidigital number, since it uses as much as digits as its factorization.

1501213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651 (or 30644 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1501213 is about 1225.2399764944. The cubic root of 1501213 is about 114.5022723499.

Adding to 1501213 its reverse (3121051), we get a palindrome (4622264).

The spelling of 1501213 in words is "one million, five hundred one thousand, two hundred thirteen".