1253533454 has 12 divisors (see below), whose sum is σ = 1997413224. Its totient is φ = 589897824.

The previous prime is 1253533447. The next prime is 1253533459. The reversal of 1253533454 is 4543353521.

It is a happy number.

It is a super-2 number, since 2×1253533454² = 3142692240594340232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253533459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1083794 + ... + 1084949.

It is an arithmetic number, because the mean of its divisors is an integer number (166451102).

Almost surely, 2^1253533454 is an apocalyptic number.

1253533454 is a deficient number, since it is larger than the sum of its proper divisors (743879770).

1253533454 is a wasteful number, since it uses less digits than its factorization.

1253533454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168779 (or 2168762 counting only the distinct ones).

The product of its digits is 108000, while the sum is 35.

The square root of 1253533454 is about 35405.2743810862. The cubic root of 1253533454 is about 1078.2314028979.

Adding to 1253533454 its reverse (4543353521), we get a palindrome (5796886975).

The spelling of 1253533454 in words is "one billion, two hundred fifty-three million, five hundred thirty-three thousand, four hundred fifty-four".