252154422521 has 8 divisors (see below), whose sum is σ = 253303339680. Its totient is φ = 251008051392.

The previous prime is 252154422497. The next prime is 252154422539. The reversal of 252154422521 is 125224451252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252154422521 - 2³⁴ = 234974553337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252154424521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437840 + ... + 834273.

It is an arithmetic number, because the mean of its divisors is an integer number (31662917460).

Almost surely, 2^252154422521 is an apocalyptic number.

It is an amenable number.

252154422521 is a deficient number, since it is larger than the sum of its proper divisors (1148917159).

252154422521 is a wasteful number, since it uses less digits than its factorization.

252154422521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273015.

The product of its digits is 64000, while the sum is 35.

Adding to 252154422521 its reverse (125224451252), we get a palindrome (377378873773).

The spelling of 252154422521 in words is "two hundred fifty-two billion, one hundred fifty-four million, four hundred twenty-two thousand, five hundred twenty-one".