1213575 has 24 divisors (see below), whose sum is σ = 2190336. Its totient is φ = 588000.

The previous prime is 1213573. The next prime is 1213577. The reversal of 1213575 is 5753121.

It is an interprime number because it is at equal distance from previous prime (1213573) and next prime (1213577).

It is not a de Polignac number, because 1213575 - 2¹ = 1213573 is a prime.

1213575 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (91264).

2^1213575 is an apocalyptic number.

1213575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213575 is a deficient number, since it is larger than the sum of its proper divisors (976761).

1213575 is a wasteful number, since it uses less digits than its factorization.

1213575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1490 counting only the distinct ones).

The product of its digits is 1050, while the sum is 24.

The square root of 1213575 is about 1101.6238014858. The cubic root of 1213575 is about 106.6650661652.

Adding to 1213575 its reverse (5753121), we get a palindrome (6966696).

The spelling of 1213575 in words is "one million, two hundred thirteen thousand, five hundred seventy-five".