1253534022 has 128 divisors (see below), whose sum is σ = 3102865920. Its totient is φ = 372677760.

The previous prime is 1253533993. The next prime is 1253534047. The reversal of 1253534022 is 2204353521.

It is a happy number.

1253534022 is a `hidden beast` number, since 1 + 253 + 5 + 3 + 402 + 2 = 666.

It is a super-2 number, since 2×1253534022² = 3142695088622992968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3954208 + ... + 3954524.

It is an arithmetic number, because the mean of its divisors is an integer number (24241140).

Almost surely, 2^1253534022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253534022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1551432960).

1253534022 is an abundant number, since it is smaller than the sum of its proper divisors (1849331898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1253534022 is a wasteful number, since it uses less digits than its factorization.

1253534022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1253534022 is about 35405.2824024890. The cubic root of 1253534022 is about 1078.2315657536.

Adding to 1253534022 its reverse (2204353521), we get a palindrome (3457887543).

The spelling of 1253534022 in words is "one billion, two hundred fifty-three million, five hundred thirty-four thousand, twenty-two".