51877249 has 8 divisors (see below), whose sum is σ = 52641288. Its totient is φ = 51118080.

The previous prime is 51877247. The next prime is 51877253. The reversal of 51877249 is 94277815.

It can be written as a sum of positive squares in 4 ways, for example, as 18318400 + 33558849 = 4280^2 + 5793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51877249 - 2¹ = 51877247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51877247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23889 + ... + 25969.

It is an arithmetic number, because the mean of its divisors is an integer number (6580161).

Almost surely, 2^51877249 is an apocalyptic number.

It is an amenable number.

51877249 is a deficient number, since it is larger than the sum of its proper divisors (764039).

51877249 is a wasteful number, since it uses less digits than its factorization.

51877249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

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

The square root of 51877249 is about 7202.5862716111. The cubic root of 51877249 is about 372.9571858944.

The spelling of 51877249 in words is "fifty-one million, eight hundred seventy-seven thousand, two hundred forty-nine".