51952861 has 4 divisors (see below), whose sum is σ = 52120224. Its totient is φ = 51785500.

The previous prime is 51952843. The next prime is 51952877. The reversal of 51952861 is 16825915.

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 51952861 - 2⁵ = 51952829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51952861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51952811) 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, 83215 + ... + 83836.

It is an arithmetic number, because the mean of its divisors is an integer number (13030056).

Almost surely, 2^51952861 is an apocalyptic number.

It is an amenable number.

51952861 is a deficient number, since it is larger than the sum of its proper divisors (167363).

51952861 is a wasteful number, since it uses less digits than its factorization.

51952861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167362.

The product of its digits is 21600, while the sum is 37.

The square root of 51952861 is about 7207.8333082834. The cubic root of 51952861 is about 373.1382951454.

The spelling of 51952861 in words is "fifty-one million, nine hundred fifty-two thousand, eight hundred sixty-one".