1203521255 has 4 divisors (see below), whose sum is σ = 1444225512. Its totient is φ = 962817000.

The previous prime is 1203521251. The next prime is 1203521261. The reversal of 1203521255 is 5521253021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5521253021 = 67723 ⋅81527.

It is not a de Polignac number, because 1203521255 - 2² = 1203521251 is a prime.

It is a super-2 number, since 2×1203521255² = 2896926822473550050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203521251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120352121 + ... + 120352130.

It is an arithmetic number, because the mean of its divisors is an integer number (361056378).

Almost surely, 2^1203521255 is an apocalyptic number.

1203521255 is a deficient number, since it is larger than the sum of its proper divisors (240704257).

1203521255 is an equidigital number, since it uses as much as digits as its factorization.

1203521255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240704256.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1203521255 is about 34691.8038591250. The cubic root of 1203521255 is about 1063.6969685470.

Adding to 1203521255 its reverse (5521253021), we get a palindrome (6724774276).

The spelling of 1203521255 in words is "one billion, two hundred three million, five hundred twenty-one thousand, two hundred fifty-five".