1428520253 has 2 divisors, whose sum is σ = 1428520254. Its totient is φ = 1428520252.

The previous prime is 1428520229. The next prime is 1428520267. The reversal of 1428520253 is 3520258241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1233554884 + 194965369 = 35122^2 + 13963^2 .

It is an emirp because it is prime and its reverse (3520258241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1428520253 - 2²² = 1424325949 is a prime.

It is a super-2 number, since 2×1428520253² = 4081340226462368018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428520273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714260126 + 714260127.

It is an arithmetic number, because the mean of its divisors is an integer number (714260127).

Almost surely, 2^1428520253 is an apocalyptic number.

It is an amenable number.

1428520253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428520253 is an equidigital number, since it uses as much as digits as its factorization.

1428520253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1428520253 is about 37795.7703056837. The cubic root of 1428520253 is about 1126.2344317946.

Adding to 1428520253 its reverse (3520258241), we get a palindrome (4948778494).

The spelling of 1428520253 in words is "one billion, four hundred twenty-eight million, five hundred twenty thousand, two hundred fifty-three".