51974827 has 4 divisors (see below), whose sum is σ = 52011000. Its totient is φ = 51938656.

The previous prime is 51974801. The next prime is 51974837. The reversal of 51974827 is 72847915.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51974827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51974837) 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, 15838 + ... + 18835.

It is an arithmetic number, because the mean of its divisors is an integer number (13002750).

Almost surely, 2^51974827 is an apocalyptic number.

51974827 is a deficient number, since it is larger than the sum of its proper divisors (36173).

51974827 is a wasteful number, since it uses less digits than its factorization.

51974827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36172.

The product of its digits is 141120, while the sum is 43.

The square root of 51974827 is about 7209.3569061325. The cubic root of 51974827 is about 373.1908761503.

The spelling of 51974827 in words is "fifty-one million, nine hundred seventy-four thousand, eight hundred twenty-seven".