438551 has 2 divisors, whose sum is σ = 438552. Its totient is φ = 438550.

The previous prime is 438533. The next prime is 438569. The reversal of 438551 is 155834.

It is a balanced prime because it is at equal distance from previous prime (438533) and next prime (438569).

It is a cyclic number.

It is not a de Polignac number, because 438551 - 2¹⁰ = 437527 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219275 + 219276.

It is an arithmetic number, because the mean of its divisors is an integer number (219276).

2⁴³⁸⁵⁵¹ is an apocalyptic number.

438551 is a deficient number, since it is larger than the sum of its proper divisors (1).

438551 is an equidigital number, since it uses as much as digits as its factorization.

438551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 438551 is about 662.2318325179. The cubic root of 438551 is about 75.9754653030.

It can be divided in two parts, 438 and 551, that added together give a palindrome (989).

The spelling of 438551 in words is "four hundred thirty-eight thousand, five hundred fifty-one".