51977141 has 6 divisors (see below), whose sum is σ = 54857142. Its totient is φ = 49241160.

The previous prime is 51977131. The next prime is 51977201. The reversal of 51977141 is 14177915.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 6482116 = 6745^2 + 2546^2 .

It is not a de Polignac number, because 51977141 - 2¹⁸ = 51714997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51977131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71630 + ... + 72351.

It is an arithmetic number, because the mean of its divisors is an integer number (9142857).

Almost surely, 2^51977141 is an apocalyptic number.

It is an amenable number.

51977141 is a deficient number, since it is larger than the sum of its proper divisors (2880001).

51977141 is a wasteful number, since it uses less digits than its factorization.

51977141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144019 (or 144000 counting only the distinct ones).

The product of its digits is 8820, while the sum is 35.

The square root of 51977141 is about 7209.5173902280. The cubic root of 51977141 is about 373.1964144138.

The spelling of 51977141 in words is "fifty-one million, nine hundred seventy-seven thousand, one hundred forty-one".