1253550453 has 4 divisors (see below), whose sum is σ = 1671400608. Its totient is φ = 835700300.

The previous prime is 1253550451. The next prime is 1253550527. The reversal of 1253550453 is 3540553521.

It is a happy number.

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 1253550453 - 2¹ = 1253550451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253550451) 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, 208925073 + ... + 208925078.

It is an arithmetic number, because the mean of its divisors is an integer number (417850152).

Almost surely, 2^1253550453 is an apocalyptic number.

It is an amenable number.

1253550453 is a deficient number, since it is larger than the sum of its proper divisors (417850155).

1253550453 is an equidigital number, since it uses as much as digits as its factorization.

1253550453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417850154.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 1253550453 is about 35405.5144433745. The cubic root of 1253550453 is about 1078.2362767933.

The spelling of 1253550453 in words is "one billion, two hundred fifty-three million, five hundred fifty thousand, four hundred fifty-three".