51878233 has 4 divisors (see below), whose sum is σ = 56594448. Its totient is φ = 47162020.

The previous prime is 51878231. The next prime is 51878251. The reversal of 51878233 is 33287815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51878233 - 2¹ = 51878231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51878192 and 51878201.

It is not an unprimeable number, because it can be changed into a prime (51878231) 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, 2358091 + ... + 2358112.

It is an arithmetic number, because the mean of its divisors is an integer number (14148612).

Almost surely, 2^51878233 is an apocalyptic number.

It is an amenable number.

51878233 is a deficient number, since it is larger than the sum of its proper divisors (4716215).

51878233 is a wasteful number, since it uses less digits than its factorization.

51878233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716214.

The product of its digits is 40320, while the sum is 37.

The square root of 51878233 is about 7202.6545800837. The cubic root of 51878233 is about 372.9595439451.

It can be divided in two parts, 518782 and 33, that added together give a palindrome (518815).

The spelling of 51878233 in words is "fifty-one million, eight hundred seventy-eight thousand, two hundred thirty-three".