252215421351 has 8 divisors (see below), whose sum is σ = 339754107504. Its totient is φ = 166410174720.

The previous prime is 252215421343. The next prime is 252215421373. The reversal of 252215421351 is 153124512252.

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

It is not a de Polignac number, because 252215421351 - 2³ = 252215421343 is a prime.

It is a super-2 number, since 2×252215421351² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252215421751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433359540 + ... + 433360121.

It is an arithmetic number, because the mean of its divisors is an integer number (42469263438).

Almost surely, 2^252215421351 is an apocalyptic number.

252215421351 is a deficient number, since it is larger than the sum of its proper divisors (87538686153).

252215421351 is an equidigital number, since it uses as much as digits as its factorization.

252215421351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866719761.

The product of its digits is 24000, while the sum is 33.

Subtracting from 252215421351 its reverse (153124512252), we obtain a palindrome (99090909099).

The spelling of 252215421351 in words is "two hundred fifty-two billion, two hundred fifteen million, four hundred twenty-one thousand, three hundred fifty-one".