252443541 has 40 divisors (see below), whose sum is σ = 397697184. Its totient is φ = 142413600.

The previous prime is 252443531. The next prime is 252443551. The reversal of 252443541 is 145344252.

It is an interprime number because it is at equal distance from previous prime (252443531) and next prime (252443551).

It is not a de Polignac number, because 252443541 - 2⁷ = 252443413 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 252443499 and 252443508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252443531) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 727330 + ... + 727676.

Almost surely, 2^252443541 is an apocalyptic number.

252443541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

252443541 is a deficient number, since it is larger than the sum of its proper divisors (145253643).

252443541 is an equidigital number, since it uses as much as digits as its factorization.

252443541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479 (or 458 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 252443541 is about 15888.4719529601. The cubic root of 252443541 is about 632.0063198708.

Adding to 252443541 its reverse (145344252), we get a palindrome (397787793).

The spelling of 252443541 in words is "two hundred fifty-two million, four hundred forty-three thousand, five hundred forty-one".