378551 has 2 divisors, whose sum is σ = 378552. Its totient is φ = 378550.

The previous prime is 378533. The next prime is 378559. The reversal of 378551 is 155873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378551 - 2¹⁰ = 377527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189275 + 189276.

It is an arithmetic number, because the mean of its divisors is an integer number (189276).

2³⁷⁸⁵⁵¹ is an apocalyptic number.

378551 is a deficient number, since it is larger than the sum of its proper divisors (1).

378551 is an equidigital number, since it uses as much as digits as its factorization.

378551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 29.

The square root of 378551 is about 615.2649835640. The cubic root of 378551 is about 72.3393828367.

It can be divided in two parts, 378 and 551, that added together give a palindrome (929).

The spelling of 378551 in words is "three hundred seventy-eight thousand, five hundred fifty-one".