1304502253 has 4 divisors (see below), whose sum is σ = 1305261088. Its totient is φ = 1303743420.

The previous prime is 1304502193. The next prime is 1304502257. The reversal of 1304502253 is 3522054031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3522054031 = 29 ⋅121450139.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1304502253 is a prime.

It is a super-2 number, since 2×1304502253² = 3403452256164152018, 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 (1304502257) 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, 376833 + ... + 380278.

It is an arithmetic number, because the mean of its divisors is an integer number (326315272).

Almost surely, 2^1304502253 is an apocalyptic number.

It is an amenable number.

1304502253 is a deficient number, since it is larger than the sum of its proper divisors (758835).

1304502253 is an equidigital number, since it uses as much as digits as its factorization.

1304502253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758834.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1304502253 is about 36117.8938062562. The cubic root of 1304502253 is about 1092.6513613297.

Adding to 1304502253 its reverse (3522054031), we get a palindrome (4826556284).

The spelling of 1304502253 in words is "one billion, three hundred four million, five hundred two thousand, two hundred fifty-three".