252493837 has 4 divisors (see below), whose sum is σ = 254102236. Its totient is φ = 250885440.

The previous prime is 252493819. The next prime is 252493841. The reversal of 252493837 is 738394252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39012516 + 213481321 = 6246^2 + 14611^2 .

It is a cyclic number.

It is not a de Polignac number, because 252493837 - 2²³ = 244105229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252493793 and 252493802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252493817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803964 + ... + 804277.

It is an arithmetic number, because the mean of its divisors is an integer number (63525559).

Almost surely, 2^252493837 is an apocalyptic number.

It is an amenable number.

252493837 is a deficient number, since it is larger than the sum of its proper divisors (1608399).

252493837 is a wasteful number, since it uses less digits than its factorization.

252493837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608398.

The product of its digits is 362880, while the sum is 43.

The square root of 252493837 is about 15890.0546569230. The cubic root of 252493837 is about 632.0482900198.

The spelling of 252493837 in words is "two hundred fifty-two million, four hundred ninety-three thousand, eight hundred thirty-seven".