252638071 has 12 divisors (see below), whose sum is σ = 311173488. Its totient is φ = 203808192.

The previous prime is 252638047. The next prime is 252638081. The reversal of 252638071 is 170836252.

It is a happy number.

It is not a de Polignac number, because 252638071 - 2⁹ = 252637559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252638011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150811 + ... + 152476.

It is an arithmetic number, because the mean of its divisors is an integer number (25931124).

Almost surely, 2^252638071 is an apocalyptic number.

252638071 is a deficient number, since it is larger than the sum of its proper divisors (58535417).

252638071 is a wasteful number, since it uses less digits than its factorization.

252638071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303318 (or 303311 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 252638071 is about 15894.5925081457. The cubic root of 252638071 is about 632.1686170491.

The spelling of 252638071 in words is "two hundred fifty-two million, six hundred thirty-eight thousand, seventy-one".