1220523 has 8 divisors (see below), whose sum is σ = 1683600. Its totient is φ = 785568.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220523 is 3250221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220523 - 2⁴ = 1220507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220423) 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 in 7 ways as a sum of consecutive naturals, for example, 6928 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (210450).

2^1220523 is an apocalyptic number.

1220523 is a deficient number, since it is larger than the sum of its proper divisors (463077).

1220523 is a wasteful number, since it uses less digits than its factorization.

1220523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14061.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1220523 is about 1104.7728273270. The cubic root of 1220523 is about 106.8682397147.

Adding to 1220523 its reverse (3250221), we get a palindrome (4470744).

The spelling of 1220523 in words is "one million, two hundred twenty thousand, five hundred twenty-three".