1245553453 has 2 divisors, whose sum is σ = 1245553454. Its totient is φ = 1245553452.

The previous prime is 1245553423. The next prime is 1245553469. The reversal of 1245553453 is 3543555421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028933929 + 216619524 = 32077^2 + 14718^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245553453 - 2²⁵ = 1211999021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245553403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622776726 + 622776727.

It is an arithmetic number, because the mean of its divisors is an integer number (622776727).

Almost surely, 2^1245553453 is an apocalyptic number.

It is an amenable number.

1245553453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245553453 is an equidigital number, since it uses as much as digits as its factorization.

1245553453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180000, while the sum is 37.

The square root of 1245553453 is about 35292.3993658691. The cubic root of 1245553453 is about 1075.9385214410.

The spelling of 1245553453 in words is "one billion, two hundred forty-five million, five hundred fifty-three thousand, four hundred fifty-three".