1451505253 has 4 divisors (see below), whose sum is σ = 1583460288. Its totient is φ = 1319550220.

The previous prime is 1451505241. The next prime is 1451505257. The reversal of 1451505253 is 3525051541.

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.

It is a cyclic number.

It is not a de Polignac number, because 1451505253 - 2⁹ = 1451504741 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451505257) 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, 65977501 + ... + 65977522.

It is an arithmetic number, because the mean of its divisors is an integer number (395865072).

Almost surely, 2^1451505253 is an apocalyptic number.

It is an amenable number.

1451505253 is a deficient number, since it is larger than the sum of its proper divisors (131955035).

1451505253 is a wasteful number, since it uses less digits than its factorization.

1451505253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131955034.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1451505253 is about 38098.6253426551. The cubic root of 1451505253 is about 1132.2427208366.

Adding to 1451505253 its reverse (3525051541), we get a palindrome (4976556794).

The spelling of 1451505253 in words is "one billion, four hundred fifty-one million, five hundred five thousand, two hundred fifty-three".