252155424 has 96 divisors (see below), whose sum is σ = 704422656. Its totient is φ = 78704640.

The previous prime is 252155419. The next prime is 252155429. The reversal of 252155424 is 424551252.

It is an interprime number because it is at equal distance from previous prime (252155419) and next prime (252155429).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 252155391 and 252155400.

It is not an unprimeable number, because it can be changed into a prime (252155429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598734 + ... + 599154.

It is an arithmetic number, because the mean of its divisors is an integer number (7337736).

Almost surely, 2^252155424 is an apocalyptic number.

252155424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252155424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352211328).

252155424 is an abundant number, since it is smaller than the sum of its proper divisors (452267232).

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

252155424 is a wasteful number, since it uses less digits than its factorization.

252155424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 810 counting only the distinct ones).

The product of its digits is 16000, while the sum is 30.

The square root of 252155424 is about 15879.4025076512. The cubic root of 252155424 is about 631.7657894105.

The spelling of 252155424 in words is "two hundred fifty-two million, one hundred fifty-five thousand, four hundred twenty-four".