51984461 has 4 divisors (see below), whose sum is σ = 52333500. Its totient is φ = 51635424.

The previous prime is 51984431. The next prime is 51984469. The reversal of 51984461 is 16448915.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6002500 + 45981961 = 2450^2 + 6781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51984461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51984469) 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, 174296 + ... + 174593.

It is an arithmetic number, because the mean of its divisors is an integer number (13083375).

Almost surely, 2^51984461 is an apocalyptic number.

It is an amenable number.

51984461 is a deficient number, since it is larger than the sum of its proper divisors (349039).

51984461 is a wasteful number, since it uses less digits than its factorization.

51984461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349038.

The product of its digits is 34560, while the sum is 38.

The square root of 51984461 is about 7210.0250346306. The cubic root of 51984461 is about 373.2139328169.

The spelling of 51984461 in words is "fifty-one million, nine hundred eighty-four thousand, four hundred sixty-one".