252401722 has 4 divisors (see below), whose sum is σ = 378602586. Its totient is φ = 126200860.

The previous prime is 252401717. The next prime is 252401729. The reversal of 252401722 is 227104252.

252401722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 252142641 + 259081 = 15879^2 + 509^2 .

It is not an unprimeable number, because it can be changed into a prime (252401729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63100429 + ... + 63100432.

Almost surely, 2^252401722 is an apocalyptic number.

252401722 is a deficient number, since it is larger than the sum of its proper divisors (126200864).

252401722 is a wasteful number, since it uses less digits than its factorization.

252401722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126200863.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 252401722 is about 15887.1558814031. The cubic root of 252401722 is about 631.9714192197.

Adding to 252401722 its reverse (227104252), we get a palindrome (479505974).

It can be divided in two parts, 25240 and 1722, that added together give a palindrome (26962).

The spelling of 252401722 in words is "two hundred fifty-two million, four hundred one thousand, seven hundred twenty-two".