855148231 has 4 divisors (see below), whose sum is σ = 977312272. Its totient is φ = 732984192.

The previous prime is 855148213. The next prime is 855148241. The reversal of 855148231 is 132841558.

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

It is a cyclic number.

It is not a de Polignac number, because 855148231 - 2⁵ = 855148199 is a prime.

It is a super-2 number, since 2×855148231² = 1462556993964858722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855148241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61082010 + ... + 61082023.

It is an arithmetic number, because the mean of its divisors is an integer number (244328068).

Almost surely, 2^855148231 is an apocalyptic number.

855148231 is a deficient number, since it is larger than the sum of its proper divisors (122164041).

855148231 is a wasteful number, since it uses less digits than its factorization.

855148231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122164040.

The product of its digits is 38400, while the sum is 37.

The square root of 855148231 is about 29242.9176211951. The cubic root of 855148231 is about 949.1768422641.

Adding to 855148231 its reverse (132841558), we get a palindrome (987989789).

The spelling of 855148231 in words is "eight hundred fifty-five million, one hundred forty-eight thousand, two hundred thirty-one".