1215153 has 6 divisors (see below), whose sum is σ = 1755234. Its totient is φ = 810096.

The previous prime is 1215133. The next prime is 1215157. The reversal of 1215153 is 3515121.

It can be written as a sum of positive squares in only one way, i.e., 1140624 + 74529 = 1068^2 + 273^2 .

It is not a de Polignac number, because 1215153 - 2⁵ = 1215121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1215157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67500 + ... + 67517.

It is an arithmetic number, because the mean of its divisors is an integer number (292539).

2^1215153 is an apocalyptic number.

It is an amenable number.

1215153 is a deficient number, since it is larger than the sum of its proper divisors (540081).

1215153 is a wasteful number, since it uses less digits than its factorization.

1215153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135023 (or 135020 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1215153 is about 1102.3397842771. The cubic root of 1215153 is about 106.7112779975.

Subtracting 1215153 from its reverse (3515121), we obtain a cube (2299968 = 132³).

The spelling of 1215153 in words is "one million, two hundred fifteen thousand, one hundred fifty-three".